ASTROSAT CZTI

Data Quality Report

Orbit 23182

Creation date: 2024-06-27T18:50:58.893268
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/AS1A08_003T05_9000003426_23182cztM0_level2.evt modeM0/AS1A08_003T05_9000003426_23182cztM0_level2_quad_clean.evt
Size (bytes)1,683,146,880233,519,040
Size1.6 GB 222.7 MB
Events in quadrant A13,538,8411,415,428
Events in quadrant B9,111,0291,513,379
Events in quadrant C10,382,7011,446,348
Events in quadrant D16,660,2081,387,029

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0525094
B0390654
C0425464
D0624904

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19008191110.053662%
B190093001.578200%
C190096043.177442%
D19009204110.737019%

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 20868 19012 1346 1346 6.45% 7.08%
B 20869 19014 8 8 0.04% 0.04%
C 20869 19014 171 171 0.82% 0.90%
D 20869 19013 1439 1439 6.90% 7.57%

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 4897846 10813.91 2240 2186 452.7
A 13 254 25968 52.53 2240 2186 452.7
A 3 137 20275 39.96 2240 2186 452.7
B 12 111 55974 119.89 2306 2245 448.2
B 11 111 50393 107.44 2306 2245 448.2
B 14 111 44724 94.79 2306 2245 448.2
C 0 10 705677 1369.1 2201 2210 513.8
C 10 9 546461 1059.23 2201 2210 513.8
C 14 238 345568 668.25 2201 2210 513.8
D 7 238 5046721 9464.03 2182 2116 533.0
D 12 233 1959797 3672.75 2182 2116 533.0
D 1 52 512722 957.93 2182 2116 533.0

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