ASTROSAT CZTI

Data Quality Report

Orbit 24596

Creation date: 2024-06-27T19:07:43.103242
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/AS1T03_189T01_9000003614_24596cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24596cztM0_level2_quad_clean.evt
Size (bytes)550,765,440105,747,840
Size525.3 MB 100.8 MB
Events in quadrant A3,563,583693,264
Events in quadrant B3,640,166702,350
Events in quadrant C3,924,329668,479
Events in quadrant D5,052,731626,487

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154322
B0155302
C0162602
D0200332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7358650.883392%
B7359941.277347%
C73581672.269638%
D73585397.325360%

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 8748 7360 0 0 0.00% 0.00%
B 8749 7361 0 0 0.00% 0.00%
C 8748 7360 10 10 0.11% 0.14%
D 8748 7360 454 454 5.19% 6.17%

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 10975 54.25 921 902 185.7
A 3 137 8511 40.98 921 902 185.7
A 0 226 7864 37.49 921 902 185.7
B 7 202 23612 128.09 917 894 177.4
B 12 111 21922 118.56 917 894 177.4
B 11 111 19958 107.49 917 894 177.4
C 10 9 150652 718.03 889 895 208.6
C 14 238 140924 671.39 889 895 208.6
C 7 247 81597 386.94 889 895 208.6
D 1 52 1613032 7552.29 873 846 213.5
D 8 195 101904 473.41 873 846 213.5
D 2 234 31917 145.55 873 846 213.5

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