ASTROSAT CZTI

Data Quality Report

Orbit 25558

Creation date: 2024-06-27T19:18:59.649639
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/AS1A09_008T05_9000003724_25558cztM0_level2.evt modeM0/AS1A09_008T05_9000003724_25558cztM0_level2_quad_clean.evt
Size (bytes)479,995,20093,156,480
Size457.8 MB 88.8 MB
Events in quadrant A3,272,488607,468
Events in quadrant B3,229,363609,193
Events in quadrant C3,212,407573,259
Events in quadrant D4,367,204563,802

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140550
B0138670
C0138620
D0175920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6705230.343028%
B6705290.432513%
C6705711.058911%
D67051071.595824%

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 7660 6706 0 0 0.00% 0.00%
B 7660 6706 0 0 0.00% 0.00%
C 7660 6706 0 0 0.00% 0.00%
D 7660 6706 68 68 0.89% 1.01%

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 6 16 90872 542.94 825 807 165.9
A 13 254 10200 56.62 825 807 165.9
A 3 137 7786 42.07 825 807 165.9
B 0 190 24506 150.5 817 796 157.5
B 12 111 19373 117.92 817 796 157.5
B 11 111 17424 105.55 817 796 157.5
C 14 238 125588 669.67 790 794 186.4
C 2 16 5434 24.9 790 794 186.4
C 13 61 5338 24.38 790 794 186.4
D 8 195 727103 3771.75 797 774 192.6
D 1 52 460607 2387.87 797 774 192.6
D 2 244 99469 512.51 797 774 192.6

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