ASTROSAT CZTI

Data Quality Report

Orbit 55067

Creation date: 2025-12-02T14:43:59.020391
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_55067cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55067cztM0_level2_quad_clean.evt
Size (bytes)1,530,512,640307,969,920
Size1.4 GB 293.7 MB
Events in quadrant A11,545,7942,049,297
Events in quadrant B11,797,8242,220,622
Events in quadrant C11,345,7801,964,400
Events in quadrant D20,283,0271,593,291

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0549294368
B0552564508
C0539144113
D0831547697

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047634
B047537
C047636
D047333

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0210
D0221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A218025872.692414%
B216944402.028211%
C217493631.669042%
D21685310114.300208%

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 51321 22017 483 483 0.94% 2.19%
B 51320 21938 195 195 0.38% 0.89%
C 51320 21977 270 270 0.53% 1.23%
D 51321 21915 2708 2708 5.28% 12.36%

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 1613379 2815.23 2362 2316 572.3
A 15 32 185860 320.73 2362 2316 572.3
A 3 14 133325 228.93 2362 2316 572.3
B 5 185 1365731 2714.53 2341 2254 502.3
B 4 81 1027175 2040.5 2341 2254 502.3
B 10 247 88031 170.77 2341 2254 502.3
C 13 3 670446 1058.38 2306 2287 631.3
C 9 38 339051 533.44 2306 2287 631.3
C 1 16 253055 397.22 2306 2287 631.3
D 15 94 3411092 5616.89 2145 2051 606.9
D 11 129 3258838 5366.03 2145 2051 606.9
D 3 12 1465756 2411.67 2145 2051 606.9

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