ASTROSAT CZTI

Data Quality Report

Orbit 32873

Creation date: 2024-06-27T20:42:51.405918
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/AS1A11_005T04_9000004742_32873cztM0_level2.evt modeM0/AS1A11_005T04_9000004742_32873cztM0_level2_quad_clean.evt
Size (bytes)451,540,80069,281,280
Size430.6 MB 66.1 MB
Events in quadrant A3,477,563441,836
Events in quadrant B3,211,534446,326
Events in quadrant C2,652,187452,011
Events in quadrant D3,999,736412,159

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0321
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01351529
B01249422
C01082327
D01542933

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4919330.670868%
B49202915.914634%
C4915360.732452%
D49171352.745577%

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 7020 4927 16 16 0.23% 0.32%
B 7020 4927 166 166 2.36% 3.37%
C 7020 4927 26 26 0.37% 0.53%
D 7020 4926 130 130 1.85% 2.64%

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 14 63 1088580 8838.34 613 600 123.1
A 13 6 18853 148.28 613 600 123.1
A 13 254 9014 68.35 613 600 123.1
B 5 172 678751 6028.88 610 598 112.5
B 0 197 45053 395.21 610 598 112.5
B 0 230 43847 384.49 610 598 112.5
C 0 10 124186 896.58 602 606 137.8
C 3 233 114459 826.01 602 606 137.8
C 14 67 35182 250.85 602 606 137.8
D 8 195 707160 4829.2 582 570 146.3
D 2 250 512916 3501.63 582 570 146.3
D 12 218 184905 1259.84 582 570 146.3

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