ASTROSAT CZTI

Data Quality Report

Orbit 36554

Creation date: 2024-06-27T21:28:30.167237
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/AS1C07_006T01_9000005218_36554cztM0_level2.evt modeM0/AS1C07_006T01_9000005218_36554cztM0_level2_quad_clean.evt
Size (bytes)280,575,36049,245,120
Size267.6 MB 47.0 MB
Events in quadrant A1,557,597324,293
Events in quadrant B1,876,136321,113
Events in quadrant C1,981,692312,273
Events in quadrant D2,857,804300,198

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069021
B077771
C080161
D0109431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114005835747613646
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A328160.182871%
B3281300.914355%
C32811233.748857%
D32811223.718379%

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 3281 3281 4 4 0.12% 0.12%
B 3281 3281 15 15 0.46% 0.46%
C 3281 3281 92 92 2.80% 2.80%
D 3281 3281 103 103 3.14% 3.14%

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 121013 1634.18 358 351 73.8
A 15 223 30112 403.07 358 351 73.8
A 9 143 14137 186.71 358 351 73.8
B 0 213 96495 1416.01 354 344 67.9
B 0 219 92631 1359.11 354 344 67.9
B 5 255 92311 1354.4 354 344 67.9
C 0 10 425095 5196.77 346 349 81.7
C 15 214 136923 1670.99 346 349 81.7
C 14 254 48506 589.2 346 349 81.7
D 12 235 917809 10660.17 347 338 86.1
D 13 249 238339 2765.35 347 338 86.1
D 2 153 78683 910.3 347 338 86.1

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