ASTROSAT CZTI

Data Quality Report

Orbit 53543

Creation date: 2025-08-21T20:41:27.425435
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_53543cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53543cztM0_level2_quad_clean.evt
Size (bytes)2,354,993,280279,547,200
Size2.2 GB 266.6 MB
Events in quadrant A30,516,3541,363,806
Events in quadrant B12,356,0082,273,339
Events in quadrant C26,952,9841,459,409
Events in quadrant D15,694,4791,889,857

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04380
B04380
C04380
D04380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01053854
B0509515
C0946914
D0611054

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21453828038.596001%
B214528343.887749%
C21453603628.135925%
D2145312906.013145%

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 25793 21453 6867 6867 26.62% 32.01%
B 25792 21452 245 245 0.95% 1.14%
C 25793 21453 5573 5573 21.61% 25.98%
D 25793 21453 963 963 3.73% 4.49%

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 3 63 18461256 37583.5 1983 1934 491.2
A 15 174 2372092 4825.68 1983 1934 491.2
A 12 115 863195 1753.54 1983 1934 491.2
B 5 185 557531 1112.94 2363 2276 498.9
B 8 128 375166 747.41 2363 2276 498.9
B 10 28 272689 542.01 2363 2276 498.9
C 1 241 11922456 21877.24 1991 1970 544.9
C 15 224 5020026 9209.46 1991 1970 544.9
C 4 5 969846 1776.31 1991 1970 544.9
D 12 18 929888 1383.64 2331 2218 670.5
D 2 153 868089 1291.46 2331 2218 670.5
D 2 120 854559 1271.28 2331 2218 670.5

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