ASTROSAT CZTI

Data Quality Report

Orbit 24127

Creation date: 2024-06-27T19:02:24.777767
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_069T01_9000003570_24127cztM0_level2.evt modeM0/AS1A07_069T01_9000003570_24127cztM0_level2_quad_clean.evt
Size (bytes)478,468,80075,240,000
Size456.3 MB 71.8 MB
Events in quadrant A3,506,694467,457
Events in quadrant B3,500,486477,774
Events in quadrant C3,521,696441,513
Events in quadrant D3,516,561434,010

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143693
B0142702
C0142972
D0145752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6555340.518688%
B6555410.625477%
C6555691.052632%
D6555300.457666%

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 7770 6555 2 2 0.03% 0.03%
B 7770 6555 1 1 0.01% 0.02%
C 7770 6555 2 2 0.03% 0.03%
D 7770 6556 16 16 0.21% 0.24%

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 90572 508.45 880 865 176.4
A 3 1 22247 121.19 880 865 176.4
A 13 254 10383 53.95 880 865 176.4
B 4 171 19835 114.04 883 865 166.3
B 12 111 19576 112.48 883 865 166.3
B 11 111 17278 98.67 883 865 166.3
C 14 238 134440 690.49 833 842 193.5
C 10 91 77886 398.19 833 842 193.5
C 3 233 30987 155.8 833 842 193.5
D 8 195 168733 825.89 839 816 203.3
D 1 52 96838 472.28 839 816 203.3
D 7 238 33411 160.32 839 816 203.3

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