ASTROSAT CZTI

Data Quality Report

Orbit 55053

Creation date: 2025-12-01T17:23:14.813467
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_025T01_9000006530_55053cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55053cztM0_level2_quad_clean.evt
Size (bytes)2,679,186,240398,217,600
Size2.5 GB 379.8 MB
Events in quadrant A22,102,1112,543,104
Events in quadrant B14,650,8373,080,115
Events in quadrant C14,668,9852,740,319
Events in quadrant D45,423,3751,621,734

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0911943140
B0695323612
C0692503351
D01647659058

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064432
B064325
C064531
D064432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366
B0364
C0363
D0365

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30189420913.942164%
B301297192.386405%
C301704861.610872%
D300081127937.586644%

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 51339 30382 2247 2247 4.38% 7.40%
B 51339 30347 195 195 0.38% 0.64%
C 51339 30361 216 216 0.42% 0.71%
D 51339 30201 9460 9460 18.43% 31.32%

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 10 253 7223430 9778.34 3002 2926 738.4
A 0 8 2230308 3016.42 3002 2926 738.4
A 3 95 599686 808.16 3002 2926 738.4
B 5 185 1116172 1607.34 3245 3124 692.5
B 4 81 341364 488.45 3245 3124 692.5
B 12 111 86257 120.05 3245 3124 692.5
C 13 3 390600 437.12 3211 3179 886.3
C 12 252 361945 404.79 3211 3179 886.3
C 1 16 208222 231.35 3211 3179 886.3
D 11 129 17685343 23776.78 2607 2494 743.7
D 15 94 12779367 17180.09 2607 2494 743.7
D 6 239 1010783 1355.77 2607 2494 743.7

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