ASTROSAT CZTI

Data Quality Report

Orbit 13707

Creation date: 2024-06-27T16:45:01.254224
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/AS1T02_041T01_9000002032_13707cztM0_level2.evt modeM0/AS1T02_041T01_9000002032_13707cztM0_level2_quad_clean.evt
Size (bytes)379,592,640120,006,720
Size362.0 MB 114.4 MB
Events in quadrant A2,693,002802,207
Events in quadrant B2,876,284832,572
Events in quadrant C2,822,749816,359
Events in quadrant D2,714,019783,277

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116402
B0120731
C0118441
D0119761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5723120.209680%
B5723320.559147%
C572380.139787%
D5723190.331994%

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 7094 5725 0 0 0.00% 0.00%
B 7094 5725 9 9 0.13% 0.16%
C 7094 5725 0 0 0.00% 0.00%
D 7094 5725 11 11 0.16% 0.19%

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 1 162 7665 50.05 697 683 139.5
A 0 226 6292 40.21 697 683 139.5
A 12 194 5124 31.83 697 683 139.5
B 8 250 47519 362.78 701 686 129.1
B 4 80 28969 219.09 701 686 129.1
B 10 252 21821 163.72 701 686 129.1
C 3 233 187689 1223.48 674 678 152.9
C 13 61 5004 28.3 674 678 152.9
C 14 234 4620 25.79 674 678 152.9
D 9 85 62950 361.56 665 652 172.3
D 8 195 44973 257.23 665 652 172.3
D 13 249 37355 213.02 665 652 172.3

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