ASTROSAT CZTI

Data Quality Report

Orbit 19602

Creation date: 2024-06-27T18:04:39.685602
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/AS1T03_115T01_9000002914_19602cztM0_level2.evt modeM0/AS1T03_115T01_9000002914_19602cztM0_level2_quad_clean.evt
Size (bytes)542,151,360101,609,280
Size517.0 MB 96.9 MB
Events in quadrant A3,889,897627,439
Events in quadrant B3,869,918669,088
Events in quadrant C3,802,778640,192
Events in quadrant D4,345,011615,802

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164962
B0163622
C0162602
D0181922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75322052.721721%
B75322142.841211%
C75322212.934148%
D75312142.841588%

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 7772 7532 1 1 0.01% 0.01%
B 7772 7533 3 3 0.04% 0.04%
C 7772 7533 3 3 0.04% 0.04%
D 7771 7532 65 65 0.84% 0.86%

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 11 29 31166 145.32 994 977 207.7
A 5 16 17396 79.03 994 977 207.7
A 9 143 13840 61.92 994 977 207.7
B 4 216 29951 156.42 950 927 185.5
B 7 220 28237 147.19 950 927 185.5
B 12 111 21382 110.24 950 927 185.5
C 14 238 139520 633.1 913 919 218.9
C 3 233 71004 320.13 913 919 218.9
C 5 112 31624 140.25 913 919 218.9
D 1 52 476622 1962.82 960 934 242.3
D 13 104 88395 360.89 960 934 242.3
D 12 225 48295 195.42 960 934 242.3

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