ASTROSAT CZTI

Data Quality Report

Orbit 53281

Creation date: 2025-08-04T05:07:26.252674
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/AS1C09_011T08_9000006492_53281cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53281cztM0_level2_quad_clean.evt
Size (bytes)685,569,60086,230,080
Size653.8 MB 82.2 MB
Events in quadrant A3,455,922633,085
Events in quadrant B4,212,565681,827
Events in quadrant C11,954,334314,800
Events in quadrant D5,262,518538,327

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148602
B0169702
C0398394
D0200292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63471772.788719%
B63472393.765559%
C6346341753.844942%
D63466289.895997%

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 7551 6347 134 134 1.77% 2.11%
B 7551 6347 161 161 2.13% 2.54%
C 7551 6347 3258 3258 43.15% 51.33%
D 7551 6347 563 563 7.46% 8.87%

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 0 8 538977 3181.52 679 663 169.2
A 3 14 72904 426.96 679 663 169.2
A 4 159 31715 183.52 679 663 169.2
B 2 249 510268 3558.75 678 654 143.2
B 10 28 343238 2392.34 678 654 143.2
B 0 213 185646 1291.84 678 654 143.2
C 1 241 5153250 38839.57 476 473 132.7
C 10 22 1301066 9803.35 476 473 132.7
C 0 177 1010864 7615.92 476 473 132.7
D 9 19 795992 4360.58 639 610 182.4
D 3 12 700152 3835.15 639 610 182.4
D 12 3 339442 1857.6 639 610 182.4

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