ASTROSAT CZTI

Data Quality Report

Orbit 19312

Creation date: 2024-06-27T18:01:16.189564
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/AS1A05_204T01_9000002856_19312cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19312cztM0_level2_quad_clean.evt
Size (bytes)701,000,64093,084,480
Size668.5 MB 88.8 MB
Events in quadrant A3,264,942625,926
Events in quadrant B3,346,547631,829
Events in quadrant C3,361,523608,465
Events in quadrant D10,789,308470,548

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143462
B0143972
C0144142
D0368974

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6910220.318379%
B6910450.651230%
C6910640.926194%
D6909254136.778116%

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 7545 6911 0 0 0.00% 0.00%
B 7545 6911 0 0 0.00% 0.00%
C 7545 6911 0 0 0.00% 0.00%
D 7544 6910 2086 2086 27.65% 30.19%

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 5 16 19770 112.56 837 820 168.4
A 4 2 12121 67.12 837 820 168.4
A 13 254 7598 40.26 837 820 168.4
B 0 229 26813 163.86 832 810 158.7
B 12 111 19180 115.76 832 810 158.7
B 11 111 16964 101.8 832 810 158.7
C 14 238 125619 654.32 809 812 190.7
C 3 233 75731 392.77 809 812 190.7
C 13 61 5594 25.07 809 812 190.7
D 10 66 4747059 28468.62 686 666 166.7
D 7 238 1555504 9325.84 686 666 166.7
D 1 52 1160185 6954.74 686 666 166.7

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