ASTROSAT CZTI

Data Quality Report

Orbit 56563

Creation date: 2026-03-13T00:50:57.274712
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_56563cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56563cztM0_level2_quad_clean.evt
Size (bytes)536,106,24090,573,120
Size511.3 MB 86.4 MB
Events in quadrant A5,002,044580,729
Events in quadrant B3,464,500677,414
Events in quadrant C4,302,707570,257
Events in quadrant D6,572,368462,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194401
B0148841
C0175571
D0239401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64776099.402501%
B6477991.528485%
C64783635.603581%
D6478121218.709478%

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 7582 6478 463 463 6.11% 7.15%
B 7582 6478 52 52 0.69% 0.80%
C 7583 6479 307 307 4.05% 4.74%
D 7583 6479 1026 1026 13.53% 15.84%

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 12 3 852651 5073.25 677 660 167.9
A 4 95 574142 3414.85 677 660 167.9
A 4 249 395228 2349.49 677 660 167.9
B 10 247 198451 1340.56 697 675 147.5
B 8 128 166129 1121.47 697 675 147.5
B 4 141 69049 463.45 697 675 147.5
C 15 230 1333717 7345.56 656 648 181.5
C 13 3 126007 690.76 656 648 181.5
C 12 254 59752 325.68 656 648 181.5
D 2 249 3234805 18680.18 603 576 173.1
D 8 129 362142 2088.32 603 576 173.1
D 2 31 98870 567.72 603 576 173.1

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