ASTROSAT CZTI

Data Quality Report

Orbit 20210107_A10_102T07_9000004102_level2

Creation date: 2025-12-18T23:11:38.532356
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_102T07_9000004102cztM0_level2.fits modeM0/AS1A10_102T07_9000004102cztM0_level2_quad_clean.evt
Size (bytes)938,937,600746,118,720
Size895.4 MB 711.6 MB
Events in quadrant A5,891,8304,336,367
Events in quadrant B5,627,6024,297,756
Events in quadrant C5,658,2364,047,825
Events in quadrant D4,853,8363,510,517

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02148920
B02077160
C01977400
D03037780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019020
B019020
C019020
D019020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01570
B01570
C01570
D01570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9339122712.431712%
B9339122372.395306%
C9339116511.767836%
D9339175438.076795%

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 116657 93376 0 0 0.00% 0.00%
B 116656 93371 0 0 0.00% 0.00%
C 116657 93376 0 0 0.00% 0.00%
D 116657 93322 0 0 0.00% 0.00%

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 0 29 5734 11.46 1535 1445 374.2
A 7 110 4577 8.37 1535 1445 374.2
A 0 30 4450 8.03 1535 1445 374.2
B 2 9 4456 10.39 1489 1425 291.8
B 5 128 3724 7.88 1489 1425 291.8
B 5 232 3667 7.68 1489 1425 291.8
C 1 81 4334 7.78 1493 1395 377.6
C 1 80 4301 7.69 1493 1395 377.6
C 12 241 4050 7.03 1493 1395 377.6
D 6 231 3464 6.05 1386 1264 363.7
D 10 189 3349 5.73 1386 1264 363.7
D 7 3 3342 5.71 1386 1264 363.7

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