ASTROSAT CZTI

Data Quality Report

Orbit 01111

Creation date: 2024-06-27T14:07:36.174705
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/AS1P01_997T02_9000000212_01111cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01111cztM0_level2_quad_clean.evt
Size (bytes)1,156,345,920113,184,000
Size1.1 GB 107.9 MB
Events in quadrant A8,743,153734,167
Events in quadrant B8,929,343746,974
Events in quadrant C8,581,970716,314
Events in quadrant D8,263,352704,022

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350853750
B0356813805
C0345043624
D0333163355

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017218
B017218
C017218
D017218

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7565350.462657%
B7565190.251157%
C7565100.132188%
D7565450.594845%

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 8605 7565 183 183 2.13% 2.42%
B 8605 7566 174 174 2.02% 2.30%
C 8605 7566 149 149 1.73% 1.97%
D 8605 7566 208 208 2.42% 2.75%

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 4 32 97027 177.05 2231 2247 535.3
A 12 243 75514 136.86 2231 2247 535.3
A 0 253 20792 34.64 2231 2247 535.3
B 5 249 52141 91.19 2315 2325 546.3
B 4 187 20258 32.83 2315 2325 546.3
B 0 230 17798 28.32 2315 2325 546.3
C 15 241 376074 651.74 2058 2127 573.8
C 10 207 93626 159.47 2058 2127 573.8
C 3 111 29987 48.56 2058 2127 573.8
D 2 16 311325 523.98 2022 2073 590.2
D 2 216 176395 295.36 2022 2073 590.2
D 10 215 98791 163.87 2022 2073 590.2

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