ASTROSAT CZTI

Data Quality Report

Orbit 54792

Creation date: 2025-11-13T23:22:37.384531
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_103T01_9000006524_54792cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54792cztM0_level2_quad_clean.evt
Size (bytes)2,168,815,680497,413,440
Size2.0 GB 474.4 MB
Events in quadrant A14,922,2183,553,581
Events in quadrant B16,707,4863,531,596
Events in quadrant C28,027,1342,823,472
Events in quadrant D18,254,6313,045,936

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06200
B06200
C06200
D06200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0684279
B07261613
C010486230
D07741210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A306835821.896816%
B306797842.555494%
C30680313010.202086%
D3068210843.533016%

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 37144 30689 197 197 0.53% 0.64%
B 37144 30687 327 327 0.88% 1.07%
C 37144 30686 2653 2653 7.14% 8.65%
D 37144 30689 807 807 2.17% 2.63%

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 556760 612.26 3435 3355 903.9
A 13 248 518316 569.72 3435 3355 903.9
A 0 117 120963 130.11 3435 3355 903.9
B 2 249 1975342 2799.84 3271 3163 704.4
B 5 185 760161 1074.69 3271 3163 704.4
B 4 81 276739 388.39 3271 3163 704.4
C 9 38 11161603 12742.54 3103 3069 875.7
C 13 3 2041487 2327.78 3103 3069 875.7
C 14 254 1119693 1275.13 3103 3069 875.7
D 3 12 1446298 1493.95 3270 3118 966.0
D 15 94 820751 846.4 3270 3118 966.0
D 3 224 636219 655.38 3270 3118 966.0

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