ASTROSAT CZTI

Data Quality Report

Orbit 38341

Creation date: 2024-06-27T21:51:27.780614
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/AS1A10_094T24_9000005374_38341cztM0_level2.fits modeM0/AS1A10_094T24_9000005374_38341cztM0_level2_quad_clean.evt
Size (bytes)745,364,160158,941,440
Size710.8 MB 151.6 MB
Events in quadrant A5,528,7391,090,731
Events in quadrant B5,297,1521,117,109
Events in quadrant C4,745,9781,092,745
Events in quadrant D11,246,033820,289

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02060
C02060
D02060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224332
B0223512
C0202222
D0402812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9973960.962599%
B99731131.133059%
C9973170.170460%
D9973199319.983957%

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 12569 9975 66 66 0.53% 0.66%
B 12569 9975 72 72 0.57% 0.72%
C 12569 9975 6 6 0.05% 0.06%
D 12569 9975 1941 1941 15.44% 19.46%

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 10 83 646007 2895.68 1104 1081 222.7
A 13 248 348923 1561.79 1104 1081 222.7
A 12 189 175698 784.02 1104 1081 222.7
B 0 183 303780 1435.05 1102 1072 210.9
B 5 184 236122 1114.3 1102 1072 210.9
B 0 229 129306 607.92 1102 1072 210.9
C 15 214 419370 1655.66 1086 1092 252.6
C 1 23 43823 169.14 1086 1092 252.6
C 14 254 34179 130.97 1086 1092 252.6
D 10 203 5313063 20887.36 1031 1002 254.3
D 12 227 370147 1451.5 1031 1002 254.3
D 7 223 298147 1168.39 1031 1002 254.3

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