ASTROSAT CZTI

Data Quality Report

Orbit 54953

Creation date: 2025-11-24T17:42:32.158769
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_014T01_9000006528_54953cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54953cztM0_level2_quad_clean.evt
Size (bytes)648,892,80076,841,280
Size618.8 MB 73.3 MB
Events in quadrant A3,449,081579,097
Events in quadrant B2,921,634638,176
Events in quadrant C3,074,342565,578
Events in quadrant D14,098,831116,469

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146241
B0129741
C0136281
D0461551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61151913.123467%
B6115600.981194%
C6116711.160889%
D6116486579.545455%

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 7195 6116 150 150 2.08% 2.45%
B 7195 6116 10 10 0.14% 0.16%
C 7196 6117 62 62 0.86% 1.01%
D 7196 6117 4810 4810 66.84% 78.63%

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 15 32 636399 3902.97 659 642 162.9
A 0 8 149389 913.17 659 642 162.9
A 4 3 49920 302.52 659 642 162.9
B 4 81 234055 1641.95 654 631 142.2
B 0 182 48616 337.54 654 631 142.2
B 7 252 28309 194.69 654 631 142.2
C 4 5 306659 1728.0 644 638 177.1
C 14 254 84243 472.09 644 638 177.1
C 12 252 70315 393.44 644 638 177.1
D 15 94 11360834 134243.87 290 277 84.6
D 2 249 600420 7091.69 290 277 84.6
D 11 129 465806 5501.0 290 277 84.6

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