ASTROSAT CZTI

Data Quality Report

Orbit 24164

Creation date: 2024-06-27T19:02:59.341500
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_067T01_9000003578_24164cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24164cztM0_level2_quad_clean.evt
Size (bytes)546,874,56090,267,840
Size521.5 MB 86.1 MB
Events in quadrant A3,901,573548,984
Events in quadrant B3,959,327558,264
Events in quadrant C4,007,098539,294
Events in quadrant D4,153,211533,268

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166152
B0167462
C0168632
D0174922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79631882.360919%
B79632413.026498%
C79642843.566047%
D79641942.435962%

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 8518 7965 0 0 0.00% 0.00%
B 8518 7966 2 2 0.02% 0.03%
C 8519 7966 1 1 0.01% 0.01%
D 8519 7968 8 8 0.09% 0.10%

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 13636 61.81 1006 984 204.7
A 3 1 10247 45.26 1006 984 204.7
A 4 2 9366 40.95 1006 984 204.7
B 0 190 26287 131.75 995 969 192.2
B 12 111 23249 115.94 995 969 192.2
B 11 111 20698 102.67 995 969 192.2
C 14 238 149543 664.0 955 960 223.8
C 0 207 43899 191.89 955 960 223.8
C 10 91 29200 126.2 955 960 223.8
D 7 238 223022 926.04 980 949 239.8
D 8 195 171652 711.83 980 949 239.8
D 2 234 38865 158.11 980 949 239.8

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