ASTROSAT CZTI

Data Quality Report

Orbit 20180521_G08_078T01_9000002110_level2

Creation date: 2021-08-28T18:51:05.101549
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1G08_078T01_9000002110cztM0_level2_bc.evt modeM0/AS1G08_078T01_9000002110cztM0_level2_quad_clean.evt
Size (bytes)8,059,910,4002,534,129,280
Size7.5 GB 2.4 GB
Events in quadrant A46,576,81916,094,089
Events in quadrant B59,722,71715,847,680
Events in quadrant C49,993,56015,797,386
Events in quadrant D74,161,38515,282,060

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040920
B040920
C040920
D040920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04260150
B04866710
C04249950
D05251800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03210
B03210
C03210
D03220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20052821751.084637%
B200530102815.126914%
C20052816060.800886%
D20052968733.427434%

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 243858 200522 51 51 0.02% 0.03%
B 243858 200515 753 753 0.31% 0.38%
C 243858 200530 9 9 0.00% 0.00%
D 243858 200523 783 783 0.32% 0.39%

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 12 189 3616799 1572.57 10599 10409 2293.3
A 8 15 1472599 637.59 10599 10409 2293.3
A 9 143 287053 120.63 10599 10409 2293.3
B 10 245 12764716 6426.04 10420 10145 1984.8
B 0 229 2475318 1242.01 10420 10145 1984.8
B 10 16 1574395 788.1 10420 10145 1984.8
C 3 233 9673069 4314.42 10239 10125 2239.7
C 14 220 156037 65.15 10239 10125 2239.7
C 10 22 73690 28.38 10239 10125 2239.7
D 5 222 10167989 4290.15 10221 9935 2367.8
D 12 110 6750378 2846.76 10221 9935 2367.8
D 1 52 6139452 2588.74 10221 9935 2367.8

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