ASTROSAT CZTI

Data Quality Report

Orbit 58252

Creation date: 2026-07-04T16:16:29.428245
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_044T03_9000006588_58252cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58252cztM0_level2_quad_clean.evt
Size (bytes)635,506,56093,614,400
Size606.1 MB 89.3 MB
Events in quadrant A3,314,503672,221
Events in quadrant B7,566,658549,497
Events in quadrant C3,525,511638,016
Events in quadrant D8,591,835502,617

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
A0147662
B0270672
C0155222
D0302537

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67722303.396338%
B6772176526.063201%
C67722523.721205%
D6771160823.748339%

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 7712 6772 10 10 0.13% 0.15%
B 7712 6773 1310 1310 16.99% 19.34%
C 7712 6773 78 78 1.01% 1.15%
D 7711 6772 1221 1221 15.83% 18.03%

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 13 248 107114 518.07 798 777 205.3
A 3 245 26221 123.96 798 777 205.3
A 3 14 18448 86.09 798 777 205.3
B 6 255 2740064 19110.28 665 642 143.3
B 4 206 795673 5546.16 665 642 143.3
B 2 249 677158 4719.39 665 642 143.3
C 13 3 178384 837.19 754 746 212.2
C 14 96 94332 441.06 754 746 212.2
C 14 246 93873 438.9 754 746 212.2
D 12 110 4255917 20025.38 726 693 212.5
D 8 160 307307 1442.95 726 693 212.5
D 3 224 246420 1156.41 726 693 212.5

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