ASTROSAT CZTI

Data Quality Report

Orbit 56297

Creation date: 2026-02-23T05:30:33.024480
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_049T01_9000006552_56297cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56297cztM0_level2_quad_clean.evt
Size (bytes)1,692,774,720192,525,120
Size1.6 GB 183.6 MB
Events in quadrant A27,775,262791,185
Events in quadrant B7,676,6111,546,814
Events in quadrant C13,832,1941,182,246
Events in quadrant D12,168,8071,228,582

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0933691
B0346271
C0522861
D0471801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15649754548.213943%
B156492241.431401%
C15650224214.325879%
D156499065.789507%

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 16014 15649 7217 7217 45.07% 46.12%
B 16014 15650 142 142 0.89% 0.91%
C 16014 15650 1923 1923 12.01% 12.29%
D 16014 15650 1001 1001 6.25% 6.40%

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 32 16104762 50359.52 1262 1233 319.8
A 3 98 1593463 4979.28 1262 1233 319.8
A 4 206 1441840 4505.12 1262 1233 319.8
B 5 185 319368 926.69 1613 1553 343.0
B 10 247 236863 686.12 1613 1553 343.0
B 7 252 194175 561.65 1613 1553 343.0
C 5 250 2706827 6650.37 1467 1453 406.8
C 12 252 1795490 4410.11 1467 1453 406.8
C 15 198 1306380 3207.78 1467 1453 406.8
D 8 129 1889307 4284.91 1537 1470 440.6
D 5 32 1194160 2707.11 1537 1470 440.6
D 2 249 981327 2224.03 1537 1470 440.6

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