ASTROSAT CZTI

Data Quality Report

Orbit 05350

Creation date: 2024-06-27T14:54:11.745912
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/AS1G05_106T01_9000000678_05350cztM0_level2.evt modeM0/AS1G05_106T01_9000000678_05350cztM0_level2_quad_clean.evt
Size (bytes)908,521,920132,027,840
Size866.4 MB 125.9 MB
Events in quadrant A5,765,337802,867
Events in quadrant B6,893,151795,801
Events in quadrant C5,403,064804,208
Events in quadrant D8,631,998756,423

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02506
C02500
D02500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025947285
B028910298
C025011264
D034213740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0181
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121331251.030248%
B121422692.215451%
C12135510.420272%
D120788056.665011%

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 14024 12253 30 30 0.21% 0.24%
B 14024 12260 136 136 0.97% 1.11%
C 14024 12254 0 0 0.00% 0.00%
D 14024 12221 735 735 5.24% 6.01%

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 287502 999.39 1399 1368 286.3
A 0 50 69937 239.49 1399 1368 286.3
A 15 234 19191 62.25 1399 1368 286.3
B 14 167 593816 2201.46 1405 1372 269.1
B 0 199 172705 636.65 1405 1372 269.1
B 4 81 140858 518.31 1405 1372 269.1
C 1 16 104157 327.54 1354 1363 313.8
C 13 61 11107 31.05 1354 1363 313.8
C 14 67 8604 23.07 1354 1363 313.8
D 2 16 2489695 7800.63 1290 1248 319.0
D 2 63 708571 2217.27 1290 1248 319.0
D 2 136 204789 638.05 1290 1248 319.0

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