ASTROSAT CZTI

Data Quality Report

Orbit 53581

Creation date: 2025-08-24T10:22:24.467228
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_004T05_9000006502_53581cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53581cztM0_level2_quad_clean.evt
Size (bytes)1,560,752,640147,974,400
Size1.5 GB 141.1 MB
Events in quadrant A8,259,6031,161,530
Events in quadrant B14,230,5751,037,491
Events in quadrant C10,383,2531,059,725
Events in quadrant D23,915,165339,464

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0334912
B0512182
C0397083
D0798308

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127555464.280674%
B12756276121.644716%
C1275511529.031752%
D12754892269.954524%

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 14120 12757 287 287 2.03% 2.25%
B 14121 12757 1798 1798 12.73% 14.09%
C 14120 12757 846 846 5.99% 6.63%
D 14120 12754 6360 6360 45.04% 49.87%

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 15 174 1440868 4290.15 1351 1319 335.5
A 3 63 490826 1458.83 1351 1319 335.5
A 0 8 286118 848.76 1351 1319 335.5
B 4 206 5603325 21231.63 1239 1195 263.9
B 10 28 1732477 6561.42 1239 1195 263.9
B 2 249 533461 2017.25 1239 1195 263.9
C 15 224 3008793 8466.53 1291 1279 355.2
C 1 241 897141 2521.96 1291 1279 355.2
C 12 252 296894 832.19 1291 1279 355.2
D 8 176 20446836 120116.35 585 559 170.2
D 12 34 238939 1400.42 585 559 170.2
D 7 70 178326 1044.33 585 559 170.2

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