ASTROSAT CZTI

Data Quality Report

Orbit 24756

Creation date: 2024-06-27T19:09:31.988077
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/AS1A07_018T08_9000003622_24756cztM0_level2.evt modeM0/AS1A07_018T08_9000003622_24756cztM0_level2_quad_clean.evt
Size (bytes)497,188,80076,956,480
Size474.2 MB 73.4 MB
Events in quadrant A3,443,179466,967
Events in quadrant B3,582,937467,736
Events in quadrant C3,446,015450,796
Events in quadrant D4,100,896448,364

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146721
B0150611
C0146591
D0169492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71221121.572592%
B71221562.190396%
C71231602.246245%
D71221902.667790%

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 7437 7123 3 3 0.04% 0.04%
B 7437 7123 2 2 0.03% 0.03%
C 7438 7124 0 0 0.00% 0.00%
D 7437 7123 59 59 0.79% 0.83%

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 13 254 12311 63.89 889 870 179.1
A 12 96 10700 54.9 889 870 179.1
A 3 137 8260 41.27 889 870 179.1
B 0 189 60712 351.87 876 854 170.1
B 3 64 29574 168.83 876 854 170.1
B 12 111 20496 115.46 876 854 170.1
C 14 238 134218 671.25 842 844 198.7
C 2 16 15652 74.53 842 844 198.7
C 7 247 12994 61.15 842 844 198.7
D 1 52 426221 2040.83 857 831 208.4
D 12 233 211769 1011.99 857 831 208.4
D 8 195 178872 854.16 857 831 208.4

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