ASTROSAT CZTI

Data Quality Report

Orbit 20160202_T01_054T01_9000000310_level2

Creation date: 2025-10-27T12:33:06.949281
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/AS1T01_054T01_9000000310cztM0_level2.fits modeM0/AS1T01_054T01_9000000310cztM0_level2_quad_clean.evt
Size (bytes)901,494,720920,306,880
Size859.7 MB 877.7 MB
Events in quadrant A5,241,6945,385,540
Events in quadrant B5,268,2165,446,213
Events in quadrant C5,212,3625,194,549
Events in quadrant D4,491,0404,758,210

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140622490155048140621524238382
B1140622490155048140621524238382
C1140622490155048140621524238382
D1140622490155048140621524238382

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04875820
B04624900
C04341330
D04243860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020740
B020740
C020740
D020740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10341811691.130364%
B1034267990.772533%
C1034204600.444788%
D10341410481.013402%

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 120322 103420 0 0 0.00% 0.00%
B 120322 103422 0 0 0.00% 0.00%
C 120322 103422 0 0 0.00% 0.00%
D 120322 103392 0 0 0.00% 0.00%

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 29 4938 11.44 1362 1266 320.8
A 7 110 4624 10.47 1362 1266 320.8
A 14 79 3806 7.92 1362 1266 320.8
B 2 9 4102 10.99 1390 1317 253.3
B 5 128 3453 8.43 1390 1317 253.3
B 10 225 3430 8.34 1390 1317 253.3
C 12 241 3428 6.39 1374 1266 338.1
C 9 242 3421 6.37 1374 1266 338.1
C 2 127 3407 6.33 1374 1266 338.1
D 1 19 3301 7.09 1281 1171 300.2
D 3 14 3174 6.67 1281 1171 300.2
D 6 44 3163 6.63 1281 1171 300.2

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