ASTROSAT CZTI

Data Quality Report

Orbit 06268

Creation date: 2024-06-27T15:04:55.922879
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/AS1C02_018T01_9000000822_06268cztM0_level2.evt modeM0/AS1C02_018T01_9000000822_06268cztM0_level2_quad_clean.evt
Size (bytes)874,958,400140,474,880
Size834.4 MB 134.0 MB
Events in quadrant A5,427,600894,619
Events in quadrant B6,690,055879,844
Events in quadrant C4,862,084905,069
Events in quadrant D8,795,879834,676

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233303
B0270322
C0220422
D0335112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106811791.675873%
B106814434.147552%
C10681790.739631%
D106816035.645539%

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 13126 10681 3 3 0.02% 0.03%
B 13126 10681 263 263 2.00% 2.46%
C 13126 10683 0 0 0.00% 0.00%
D 13126 10681 524 524 3.99% 4.91%

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 15 236 354098 1343.88 1284 1256 262.6
A 8 15 87716 329.3 1284 1256 262.6
A 15 174 45570 168.78 1284 1256 262.6
B 5 172 710103 2920.75 1276 1249 242.7
B 3 64 360386 1479.78 1276 1249 242.7
B 0 214 251759 1032.2 1276 1249 242.7
C 8 128 9916 30.4 1239 1245 285.3
C 13 61 9891 30.31 1239 1245 285.3
C 9 54 8935 26.96 1239 1245 285.3
D 12 220 2644304 8767.77 1218 1177 301.5
D 12 221 460525 1523.75 1218 1177 301.5
D 2 152 268912 888.13 1218 1177 301.5

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