ASTROSAT CZTI

Data Quality Report

Orbit 56652

Creation date: 2026-03-19T01:17:15.880010
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/AS1A14_083T06_9000006558_56652cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56652cztM0_level2_quad_clean.evt
Size (bytes)509,857,92087,857,280
Size486.2 MB 83.8 MB
Events in quadrant A3,118,599608,649
Events in quadrant B5,591,557583,442
Events in quadrant C4,855,103528,185
Events in quadrant D4,830,951510,900

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137401
B0208381
C0187021
D0186411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61401342.182410%
B614191814.948705%
C61415719.298160%
D61414507.327797%

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 7300 6141 82 82 1.12% 1.34%
B 7301 6142 679 679 9.30% 11.06%
C 7301 6142 573 573 7.85% 9.33%
D 7301 6142 407 407 5.57% 6.63%

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 10 251 340849 2050.43 672 656 165.9
A 4 95 44564 264.64 672 656 165.9
A 7 64 40758 241.7 672 656 165.9
B 4 21 1958435 14586.9 629 607 134.2
B 5 185 738018 5494.12 629 607 134.2
B 4 206 185568 1378.06 629 607 134.2
C 15 230 1395360 8283.31 616 609 168.4
C 12 252 522904 3101.86 616 609 168.4
C 13 3 262584 1555.85 616 609 168.4
D 12 3 1026859 5834.19 619 591 175.9
D 2 249 561258 3187.31 619 591 175.9
D 2 31 222420 1261.06 619 591 175.9

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