ASTROSAT CZTI

Data Quality Report

Orbit 17754

Creation date: 2024-06-27T17:40:31.090310
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/AS1T03_070T07_9000002644_17754cztM0_level2.evt modeM0/AS1T03_070T07_9000002644_17754cztM0_level2_quad_clean.evt
Size (bytes)738,521,280115,358,400
Size704.3 MB 110.0 MB
Events in quadrant A4,609,549745,296
Events in quadrant B5,441,448732,479
Events in quadrant C6,510,459634,586
Events in quadrant D5,155,144716,017

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202182
B0223882
C0253542
D0218992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A95791491.555486%
B95794214.395031%
C9579106611.128510%
D95782262.359574%

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 11059 9580 20 20 0.18% 0.21%
B 11059 9580 231 231 2.09% 2.41%
C 11058 9579 682 682 6.17% 7.12%
D 11058 9579 121 121 1.09% 1.26%

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 224815 964.01 1139 1110 232.1
A 0 226 9928 38.0 1139 1110 232.1
A 3 137 8645 32.47 1139 1110 232.1
B 10 245 840605 3868.75 1128 1099 217.0
B 7 220 81799 371.89 1128 1099 217.0
B 0 219 43657 196.12 1128 1099 217.0
C 4 254 2118713 8807.7 1022 1030 240.4
C 3 233 164508 679.93 1022 1030 240.4
C 14 238 155884 644.06 1022 1030 240.4
D 5 222 380091 1440.03 1103 1077 263.2
D 7 238 345710 1309.41 1103 1077 263.2
D 2 165 108720 408.98 1103 1077 263.2

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