ASTROSAT CZTI

Data Quality Report

Orbit 54588

Creation date: 2025-10-31T11:53:19.949542
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_127T09_9000006520_54588cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54588cztM0_level2_quad_clean.evt
Size (bytes)444,689,28099,938,880
Size424.1 MB 95.3 MB
Events in quadrant A4,771,853654,550
Events in quadrant B3,835,468695,060
Events in quadrant C3,178,913632,383
Events in quadrant D4,169,537590,653

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187712
B0160622
C0140292
D0169212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65012894.445470%
B65012834.353176%
C6501801.230580%
D65011902.922627%

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 7631 6502 170 170 2.23% 2.61%
B 7631 6501 129 129 1.69% 1.98%
C 7631 6502 26 26 0.34% 0.40%
D 7631 6502 100 100 1.31% 1.54%

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 3 14 1165334 6403.57 736 718 181.9
A 11 3 478343 2626.19 736 718 181.9
A 0 8 173116 947.92 736 718 181.9
B 2 249 373590 2373.4 734 709 157.1
B 5 172 149686 948.24 734 709 157.1
B 10 14 139671 884.5 734 709 157.1
C 13 3 79107 389.99 730 722 201.0
C 4 5 50069 245.52 730 722 201.0
C 9 38 48004 235.24 730 722 201.0
D 3 12 419862 2033.65 721 690 206.1
D 2 172 261382 1264.77 721 690 206.1
D 15 94 251452 1216.59 721 690 206.1

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