ASTROSAT CZTI

Data Quality Report

Orbit 20191217_C05_012T02_9000003372_level2

Creation date: 2025-12-06T18:35:27.695438
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/AS1C05_012T02_9000003372cztM0_level2.fits modeM0/AS1C05_012T02_9000003372cztM0_level2_quad_clean.evt
Size (bytes)953,271,3601,096,966,080
Size909.1 MB 1.0 GB
Events in quadrant A5,903,8946,996,456
Events in quadrant B5,617,7026,971,044
Events in quadrant C5,656,3906,577,391
Events in quadrant D4,881,2245,869,748

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02055190
B02050500
C02035550
D02880000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020220
B020200
C020220
D020220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A993556290.633083%
B993567950.800153%
C9935911751.182580%
D9935550495.081777%

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 113487 99393 0 0 0.00% 0.00%
B 113487 99392 0 0 0.00% 0.00%
C 113487 99391 0 0 0.00% 0.00%
D 113487 99388 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 5670 11.17 1536 1445 378.1
A 7 110 4732 8.69 1536 1445 378.1
A 0 30 4403 7.82 1536 1445 378.1
B 2 9 4533 10.74 1486 1425 289.4
B 2 8 3821 8.28 1486 1425 289.4
B 3 17 3770 8.1 1486 1425 289.4
C 12 241 3926 6.7 1495 1403 376.7
C 3 126 3875 6.56 1495 1403 376.7
C 12 250 3785 6.32 1495 1403 376.7
D 3 14 3620 6.35 1393 1270 370.3
D 6 231 3386 5.71 1393 1270 370.3
D 7 3 3373 5.68 1393 1270 370.3

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