ASTROSAT CZTI

Data Quality Report

Orbit 21163

Creation date: 2024-06-27T18:24:20.923683
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/AS1C04_001T01_9000003126_21163cztM0_level2.evt modeM0/AS1C04_001T01_9000003126_21163cztM0_level2_quad_clean.evt
Size (bytes)517,677,120124,850,880
Size493.7 MB 119.1 MB
Events in quadrant A2,919,771860,845
Events in quadrant B3,200,590884,206
Events in quadrant C3,067,626857,692
Events in quadrant D6,070,829747,383

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127582
B0135482
C0130382
D0223472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6181300.485358%
B6181681.100146%
C61811071.731111%
D6181101516.421291%

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 7466 6182 0 0 0.00% 0.00%
B 7466 6182 1 1 0.01% 0.02%
C 7466 6181 7 7 0.09% 0.11%
D 7466 6182 852 852 11.41% 13.78%

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 13 254 10239 63.59 751 736 149.4
A 13 252 9868 61.1 751 736 149.4
A 8 6 8588 52.54 751 736 149.4
B 0 189 71248 495.68 761 742 142.2
B 0 190 43248 298.83 761 742 142.2
B 0 197 25624 174.93 761 742 142.2
C 14 238 116980 688.89 737 741 168.7
C 0 10 44264 257.94 737 741 168.7
C 3 233 32045 185.52 737 741 168.7
D 1 52 2048168 12506.4 680 660 163.7
D 1 239 717003 4375.5 680 660 163.7
D 1 20 400853 2444.42 680 660 163.7

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