ASTROSAT CZTI

Data Quality Report

Orbit 28910

Creation date: 2024-06-27T19:58:07.984128
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/AS1A10_064T02_9000004146_28910cztM0_level2.evt modeM0/AS1A10_064T02_9000004146_28910cztM0_level2_quad_clean.evt
Size (bytes)231,955,20029,404,800
Size221.2 MB 28.0 MB
Events in quadrant A944,989196,875
Events in quadrant B950,862204,298
Events in quadrant C1,947,086186,737
Events in quadrant D3,052,314164,729

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040041
B040161
C071291
D0103448

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1883864.567180%
B1883814.301646%
C188320510.886883%
D188297351.700319%

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 2368 1884 0 0 0.00% 0.00%
B 2368 1884 0 0 0.00% 0.00%
C 2368 1884 0 0 0.00% 0.00%
D 2367 1883 962 962 40.64% 51.09%

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 13 6 3516 63.7 243 237 51.5
A 13 254 3117 55.95 243 237 51.5
A 14 235 2731 48.45 243 237 51.5
B 12 111 6079 119.53 239 232 48.9
B 11 111 5496 107.61 239 232 48.9
B 14 111 5253 102.64 239 232 48.9
C 3 233 1036441 19380.3 222 222 53.5
C 14 238 36254 673.9 222 222 53.5
C 2 114 4299 76.25 222 222 53.5
D 8 195 2057079 40015.62 206 199 51.4
D 1 52 181105 3519.44 206 199 51.4
D 12 79 33428 646.45 206 199 51.4

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