ASTROSAT CZTI

Data Quality Report

Orbit 17478

Creation date: 2024-06-27T17:37:01.393790
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/AS1A05_198T01_9000002586_17478cztM0_level2.evt modeM0/AS1A05_198T01_9000002586_17478cztM0_level2_quad_clean.evt
Size (bytes)855,659,520141,644,160
Size816.0 MB 135.1 MB
Events in quadrant A5,772,342878,220
Events in quadrant B5,921,312888,936
Events in quadrant C5,686,572856,557
Events in quadrant D7,722,681837,885

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251572
B0252462
C0243352
D0307982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A119801140.951586%
B11981980.817962%
C119811030.859695%
D119815004.173274%

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 13120 11982 34 34 0.26% 0.28%
B 13121 11983 4 4 0.03% 0.03%
C 13121 11983 0 0 0.00% 0.00%
D 13121 11983 371 371 2.83% 3.10%

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 15 174 269259 926.62 1428 1396 289.1
A 0 226 12575 38.67 1428 1396 289.1
A 12 194 10610 31.87 1428 1396 289.1
B 0 197 85675 306.1 1428 1390 275.4
B 10 16 82356 294.04 1428 1390 275.4
B 0 230 68161 242.49 1428 1390 275.4
C 14 238 211786 650.34 1368 1380 323.5
C 5 218 91822 279.55 1368 1380 323.5
C 5 219 26807 78.59 1368 1380 323.5
D 10 70 1379536 4150.04 1367 1329 332.1
D 7 238 728681 2190.19 1367 1329 332.1
D 11 176 296879 889.95 1367 1329 332.1

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