ASTROSAT CZTI

Data Quality Report

Orbit 23185

Creation date: 2024-06-27T18:51:00.482859
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/AS1A08_003T05_9000003426_23185cztM0_level2.evt modeM0/AS1A08_003T05_9000003426_23185cztM0_level2_quad_clean.evt
Size (bytes)534,234,24061,945,920
Size509.5 MB 59.1 MB
Events in quadrant A3,222,520362,212
Events in quadrant B3,321,179366,474
Events in quadrant C3,498,638348,743
Events in quadrant D5,697,498345,848

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135951
B0138511
C0143781
D0214051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6479330.509338%
B6479370.571076%
C64801261.944444%
D64806109.413580%

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 7564 6479 0 0 0.00% 0.00%
B 7564 6479 1 1 0.01% 0.02%
C 7565 6481 33 33 0.44% 0.51%
D 7565 6480 479 479 6.33% 7.39%

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 9844 53.6 835 818 168.4
A 0 226 7292 38.45 835 818 168.4
A 3 137 7127 37.47 835 818 168.4
B 0 190 63807 403.55 825 803 156.1
B 12 111 18775 115.11 825 803 156.1
B 11 111 17082 104.27 825 803 156.1
C 0 10 151046 808.28 799 806 185.9
C 14 238 127343 680.76 799 806 185.9
C 7 247 69203 367.97 799 806 185.9
D 1 52 2045458 10641.91 792 770 192.1
D 12 233 471937 2452.26 792 770 192.1
D 13 153 90666 467.88 792 770 192.1

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