ASTROSAT CZTI

Data Quality Report

Orbit 53676

Creation date: 2025-08-30T18:41:58.994603
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/AS1A14_022T05_9000006504_53676cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53676cztM0_level2_quad_clean.evt
Size (bytes)1,194,171,84057,277,440
Size1.1 GB 54.6 MB
Events in quadrant A12,966,992228,460
Events in quadrant B3,864,205650,994
Events in quadrant C14,866,752126,526
Events in quadrant D12,012,734280,112

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0429491
B0158321
C0484481
D0401871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6412425966.422333%
B64132553.976298%
C6413527182.192422%
D6413345453.859348%

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 7166 6411 3898 3898 54.40% 60.80%
B 7168 6413 52 52 0.73% 0.81%
C 7168 6413 4875 4875 68.01% 76.02%
D 7168 6413 3172 3172 44.25% 49.46%

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 3 63 9324880 75769.17 492 480 123.1
A 3 78 885187 7189.04 492 480 123.1
A 15 174 438825 3561.95 492 480 123.1
B 7 0 259652 1735.11 695 671 149.3
B 5 185 237022 1583.49 695 671 149.3
B 0 171 125396 835.63 695 671 149.3
C 1 241 8144522 90668.01 323 320 89.8
C 15 224 4227880 47064.7 323 320 89.8
C 10 22 330789 3679.05 323 320 89.8
D 8 176 5798284 42809.28 459 437 135.4
D 12 34 3145032 23218.59 459 437 135.4
D 2 37 253808 1870.8 459 437 135.4

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