ASTROSAT CZTI

Data Quality Report

Orbit 25694

Creation date: 2024-06-27T19:20:29.918920
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/AS1A09_008T03_9000003746_25694cztM0_level2.evt modeM0/AS1A09_008T03_9000003746_25694cztM0_level2_quad_clean.evt
Size (bytes)804,409,920133,660,800
Size767.1 MB 127.5 MB
Events in quadrant A5,692,918849,139
Events in quadrant B5,559,020874,597
Events in quadrant C5,463,972815,154
Events in quadrant D6,929,212775,822

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232290
B0226140
C0223420
D0275260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105881111.048357%
B105881020.963355%
C105881281.208916%
D105882872.710616%

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 13278 10591 53 53 0.40% 0.50%
B 13278 10591 1 1 0.01% 0.01%
C 13278 10591 1 1 0.01% 0.01%
D 13278 10591 216 216 1.63% 2.04%

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 13 307721 1110.51 1395 1372 275.9
A 13 254 15982 52.96 1395 1372 275.9
A 3 137 12376 39.89 1395 1372 275.9
B 0 190 49278 183.12 1396 1366 261.6
B 12 111 31620 115.63 1396 1366 261.6
B 11 111 28577 104.0 1396 1366 261.6
C 14 238 216975 696.49 1331 1346 309.6
C 3 233 50535 158.88 1331 1346 309.6
C 0 10 13474 39.17 1331 1346 309.6
D 8 195 619190 1934.7 1317 1282 319.4
D 1 52 555234 1734.45 1317 1282 319.4
D 13 104 415005 1295.39 1317 1282 319.4

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