ASTROSAT CZTI

Data Quality Report

Orbit 31242

Creation date: 2024-06-27T20:25:30.806582
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/AS1A10_073T02_9000004522_31242cztM0_level2.evt modeM0/AS1A10_073T02_9000004522_31242cztM0_level2_quad_clean.evt
Size (bytes)715,728,960110,295,360
Size682.6 MB 105.2 MB
Events in quadrant A3,686,847729,478
Events in quadrant B6,161,612715,419
Events in quadrant C4,295,531687,589
Events in quadrant D7,016,307676,262

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159203
B0238932
C0176002
D0265752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7635771.008513%
B76362603.404924%
C76362723.562074%
D76361542.016763%

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 8270 7637 0 0 0.00% 0.00%
B 8271 7638 29 29 0.35% 0.38%
C 8271 7638 41 41 0.50% 0.54%
D 8271 7638 63 63 0.76% 0.82%

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 14502 70.19 954 933 193.3
A 3 137 9876 46.26 954 933 193.3
A 0 226 8269 37.95 954 933 193.3
B 6 159 2128876 11782.78 932 908 180.6
B 0 190 148211 815.63 932 908 180.6
B 4 80 136687 751.82 932 908 180.6
C 3 233 256361 1216.95 891 895 209.9
C 14 238 164486 779.29 891 895 209.9
C 0 10 143315 678.44 891 895 209.9
D 8 195 3323247 14219.96 904 884 233.6
D 12 79 116506 494.87 904 884 233.6
D 2 250 58272 245.62 904 884 233.6

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