ASTROSAT CZTI

Data Quality Report

Orbit 20200321_A07_118T01_9000003586_level2

Creation date: 2020-06-09T22:42:57.788217
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_118T01_9000003586cztM0_level2_bc.evt modeM0/AS1A07_118T01_9000003586cztM0_level2_quad_clean.evt
Size (bytes)9,477,924,4803,081,265,920
Size8.8 GB 2.9 GB
Events in quadrant A52,296,49820,000,077
Events in quadrant B53,926,13520,534,515
Events in quadrant C59,448,43619,567,973
Events in quadrant D107,000,35418,750,308

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04849530
B04994340
C05139310
D06792260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023020
B023020
C023020
D023020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22611737101.640744%
B22611755482.453597%
C22611756062.479247%
D226118158427.006076%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 273987 226094 513 513 0.19% 0.23%
B 273987 226092 73 73 0.03% 0.03%
C 273987 226095 243 243 0.09% 0.11%
D 273987 226084 2382 2382 0.87% 1.05%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 6 16 3213672 1217.44 12317 12103 2629.8
A 10 229 1052602 395.66 12317 12103 2629.8
A 3 1 451536 167.1 12317 12103 2629.8
B 0 245 1940856 837.34 12472 12170 2303.4
B 12 17 1692772 729.63 12472 12170 2303.4
B 15 33 1115837 479.16 12472 12170 2303.4
C 7 247 8171111 2918.3 11981 11951 2795.9
C 2 16 4868987 1737.22 11981 11951 2795.9
C 3 233 183738 61.44 11981 11951 2795.9
D 8 195 22432748 8050.94 11935 11520 2784.9
D 7 238 14462685 5189.07 11935 11520 2784.9
D 1 52 12659616 4541.63 11935 11520 2784.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter