ASTROSAT CZTI

Data Quality Report

Orbit 24931

Creation date: 2024-06-27T19:11:36.402539
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_205T01_9000003652_24931cztM0_level2.evt modeM0/AS1T03_205T01_9000003652_24931cztM0_level2_quad_clean.evt
Size (bytes)548,735,040143,161,920
Size523.3 MB 136.5 MB
Events in quadrant A3,529,707966,129
Events in quadrant B3,651,761977,361
Events in quadrant C4,347,750937,491
Events in quadrant D4,573,436926,255

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155582
B0157902
C0178782
D0184792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76011552.039205%
B76011762.315485%
C76002242.947368%
D76012703.552164%

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 7846 7603 0 0 0.00% 0.00%
B 7846 7603 2 2 0.03% 0.03%
C 7845 7602 0 0 0.00% 0.00%
D 7846 7603 136 136 1.73% 1.79%

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 12412 63.65 913 892 181.0
A 3 137 8403 41.5 913 892 181.0
A 0 226 7826 38.31 913 892 181.0
B 0 230 32680 184.86 902 876 172.0
B 0 190 22926 128.16 902 876 172.0
B 12 111 21284 118.62 902 876 172.0
C 7 247 721724 3517.27 877 882 204.9
C 14 238 139408 675.92 877 882 204.9
C 2 16 37898 180.62 877 882 204.9
D 7 238 641386 2980.52 892 865 214.9
D 1 52 283194 1313.76 892 865 214.9
D 8 195 175370 812.02 892 865 214.9

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