ASTROSAT CZTI

Data Quality Report

Orbit 55356

Creation date: 2025-12-21T19:43:32.737391
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_009T01_9000006534_55356cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55356cztM0_level2_quad_clean.evt
Size (bytes)374,227,20098,066,880
Size356.9 MB 93.5 MB
Events in quadrant A3,012,774641,253
Events in quadrant B3,212,952683,571
Events in quadrant C3,389,656610,166
Events in quadrant D3,725,905576,923

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138631
B0141671
C0150421
D0157351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6566831.264088%
B6567861.309578%
C65671011.537993%
D65671902.893254%

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 7526 6567 1 1 0.01% 0.02%
B 7527 6568 13 13 0.17% 0.20%
C 7527 6568 50 50 0.66% 0.76%
D 7527 6568 140 140 1.86% 2.13%

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 0 8 88958 502.73 712 694 175.6
A 3 78 67370 379.77 712 694 175.6
A 12 115 23433 129.51 712 694 175.6
B 5 185 199672 1315.39 698 673 151.3
B 0 199 108700 714.06 698 673 151.3
B 9 254 76166 499.01 698 673 151.3
C 13 3 182003 965.53 684 677 187.8
C 9 38 160508 851.07 684 677 187.8
C 12 250 121469 643.2 684 677 187.8
D 10 181 643662 3271.2 689 659 196.6
D 11 129 283364 1438.23 689 659 196.6
D 5 173 52795 265.24 689 659 196.6

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