ASTROSAT CZTI

Data Quality Report

Orbit 20220101_T04_089T01_9000004832_level2

Creation date: 2022-01-03T11:49:39.055975
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/AS1T04_089T01_9000004832cztM0_level2_bc.evt modeM0/AS1T04_089T01_9000004832cztM0_level2_quad_clean.evt
Size (bytes)1,228,682,880317,252,160
Size1.1 GB 302.6 MB
Events in quadrant A6,060,2272,049,492
Events in quadrant B8,179,3771,990,015
Events in quadrant C7,383,6952,027,754
Events in quadrant D13,958,8301,896,836

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0502280
B0614620
C0549130
D0797170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04900
B04900
C04900
D04900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23907300.125486%
B2391110674.462381%
C239052741.146204%
D239038193.426348%

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 36018 23915 1 1 0.00% 0.00%
B 36018 23912 40 40 0.11% 0.17%
C 36018 23912 23 23 0.06% 0.10%
D 36018 23910 36 36 0.10% 0.15%

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 15 169 577252 1898.25 1395 1379 303.4
A 13 6 49184 157.58 1395 1379 303.4
A 13 254 39316 125.05 1395 1379 303.4
B 5 172 2074394 7847.6 1358 1335 264.2
B 5 255 173739 652.64 1358 1335 264.2
B 0 229 103326 386.09 1358 1335 264.2
C 15 214 974077 3231.12 1345 1340 301.1
C 0 10 436343 1444.94 1345 1340 301.1
C 14 254 265522 877.53 1345 1340 301.1
D 8 195 4800284 14235.8 1341 1310 337.1
D 12 235 1221356 3619.17 1341 1310 337.1
D 2 250 943072 2793.67 1341 1310 337.1

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