ASTROSAT CZTI

Data Quality Report

Orbit 56473

Creation date: 2026-03-07T02:29:58.282672
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_060T01_9000006556_56473cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56473cztM0_level2_quad_clean.evt
Size (bytes)724,083,84078,897,600
Size690.5 MB 75.2 MB
Events in quadrant A12,408,398299,710
Events in quadrant B3,672,828616,548
Events in quadrant C6,039,940493,528
Events in quadrant D4,184,155530,268

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413395
B0154971
C0224901
D0169641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6423350954.631792%
B64242854.436488%
C6424105516.422790%
D64241752.724159%

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 7292 6422 3017 3017 41.37% 46.98%
B 7294 6425 163 163 2.23% 2.54%
C 7294 6425 1060 1060 14.53% 16.50%
D 7294 6425 157 157 2.15% 2.44%

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 7 64 6469040 51963.78 495 483 124.5
A 4 95 2457782 19740.19 495 483 124.5
A 0 8 831591 6676.53 495 483 124.5
B 5 172 644226 4500.58 660 637 143.0
B 10 246 142221 990.09 660 637 143.0
B 0 63 107528 747.48 660 637 143.0
C 13 3 2853524 16913.53 611 608 168.7
C 12 252 357082 2113.36 611 608 168.7
C 15 230 335412 1984.89 611 608 168.7
D 2 249 671039 3652.47 643 614 183.6
D 3 12 305352 1660.21 643 614 183.6
D 8 31 222423 1208.42 643 614 183.6

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