ASTROSAT CZTI

Data Quality Report

Orbit 53788

Creation date: 2025-09-07T08:12:15.921768
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_022T04_9000006506_53788cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53788cztM0_level2_quad_clean.evt
Size (bytes)892,192,32078,275,520
Size850.9 MB 74.6 MB
Events in quadrant A16,474,68795,647
Events in quadrant B3,719,859690,465
Events in quadrant C6,824,229557,573
Events in quadrant D5,487,612558,472

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0536442
B0159172
C0249362
D0209509

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6711590287.945165%
B67111151.713605%
C671182912.352854%
D67105087.570790%

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 7821 6712 5821 5821 74.43% 86.73%
B 7821 6712 43 43 0.55% 0.64%
C 7821 6712 808 808 10.33% 12.04%
D 7820 6711 520 520 6.65% 7.75%

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 14453122 189005.5 301 293 76.5
A 3 78 356447 4657.57 301 293 76.5
A 8 6 151473 1977.04 301 293 76.5
B 5 250 498366 3285.47 706 680 151.5
B 5 185 190100 1250.45 706 680 151.5
B 10 245 38694 250.95 706 680 151.5
C 15 224 2369820 13084.35 655 650 181.1
C 1 241 816996 4508.48 655 650 181.1
C 3 242 555420 3063.86 655 650 181.1
D 1 241 1382729 6966.32 678 645 198.4
D 7 70 637679 3210.94 678 645 198.4
D 13 153 185174 930.11 678 645 198.4

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