ASTROSAT CZTI

Data Quality Report

Orbit 12785

Creation date: 2024-06-27T16:32:13.186856
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/AS1A04_110T04_9000001886_12785cztM0_level2.evt modeM0/AS1A04_110T04_9000001886_12785cztM0_level2_quad_clean.evt
Size (bytes)594,028,800139,861,440
Size566.5 MB 133.4 MB
Events in quadrant A3,754,763938,213
Events in quadrant B4,809,950940,404
Events in quadrant C3,570,766940,706
Events in quadrant D5,329,345878,011

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167453
B0196362
C0162632
D0212332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7742791.020408%
B77423995.153707%
C7742710.917076%
D77424555.877034%

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 8483 7745 21 21 0.25% 0.27%
B 8483 7745 201 201 2.37% 2.60%
C 8483 7745 5 5 0.06% 0.06%
D 8483 7745 273 273 3.22% 3.52%

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 12 189 121617 658.52 903 882 183.3
A 15 174 84255 454.73 903 882 183.3
A 8 15 44395 237.33 903 882 183.3
B 4 239 1066358 6254.92 897 872 170.3
B 0 219 137722 803.38 897 872 170.3
B 3 209 23697 133.99 897 872 170.3
C 15 208 97593 468.44 888 889 206.4
C 13 61 6479 27.08 888 889 206.4
C 8 128 4052 15.32 888 889 206.4
D 1 52 1423735 6849.82 863 835 207.7
D 8 195 310063 1488.62 863 835 207.7
D 7 80 166646 798.21 863 835 207.7

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