ASTROSAT CZTI

Data Quality Report

Orbit 54039

Creation date: 2025-09-24T18:56:32.410036
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_041T01_9000006510_54039cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54039cztM0_level2_quad_clean.evt
Size (bytes)628,104,96089,556,480
Size599.0 MB 85.4 MB
Events in quadrant A4,439,827610,837
Events in quadrant B3,540,918701,363
Events in quadrant C4,035,919600,359
Events in quadrant D10,708,851328,141

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182532
B0156492
C0171212
D0365126

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67524817.123815%
B67521702.517773%
C67523405.035545%
D6751303044.882240%

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 7707 6753 441 441 5.72% 6.53%
B 7707 6753 91 91 1.18% 1.35%
C 7707 6753 304 304 3.94% 4.50%
D 7705 6750 2821 2821 36.61% 41.79%

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 12 115 986308 5839.36 684 666 168.8
A 15 174 581689 3442.23 684 666 168.8
A 0 8 90643 533.06 684 666 168.8
B 5 185 207621 1390.07 701 676 148.9
B 0 213 160447 1073.2 701 676 148.9
B 4 171 129332 864.2 701 676 148.9
C 15 147 902791 4840.3 677 671 186.4
C 13 3 128615 686.48 677 671 186.4
C 14 254 107548 573.44 677 671 186.4
D 8 176 6359149 45954.77 483 461 138.4
D 7 70 1810389 13080.5 483 461 138.4
D 3 12 278220 2007.39 483 461 138.4

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