ASTROSAT CZTI

Data Quality Report

Orbit 19733

Creation date: 2024-06-27T18:06:10.000981
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_013T01_9000002944_19733cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19733cztM0_level2_quad_clean.evt
Size (bytes)626,664,96091,972,800
Size597.6 MB 87.7 MB
Events in quadrant A4,111,111562,481
Events in quadrant B4,362,444569,274
Events in quadrant C4,336,577543,330
Events in quadrant D5,595,328523,397

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178593
B0183363
C0181353
D0222663

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84413704.383367%
B84414124.880938%
C84414525.354816%
D84427228.552476%

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 9001 8444 0 0 0.00% 0.00%
B 9001 8444 13 13 0.14% 0.15%
C 9001 8442 0 0 0.00% 0.00%
D 9002 8443 336 336 3.73% 3.98%

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 0 226 9254 37.95 1062 1037 216.5
A 3 137 8928 36.44 1062 1037 216.5
A 9 143 8661 35.21 1062 1037 216.5
B 4 216 41287 194.94 1060 1029 206.5
B 7 220 37966 178.86 1060 1029 206.5
B 3 64 35258 165.75 1060 1029 206.5
C 3 233 174265 718.39 1021 1027 241.1
C 14 238 153162 630.88 1021 1027 241.1
C 7 247 16363 63.6 1021 1027 241.1
D 1 52 1406108 5574.11 1024 992 252.1
D 12 218 180136 710.67 1024 992 252.1
D 7 238 95362 374.37 1024 992 252.1

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