ASTROSAT CZTI

Data Quality Report

Orbit 56492

Creation date: 2026-03-08T07:16:35.481153
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_060T01_9000006556_56492cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56492cztM0_level2_quad_clean.evt
Size (bytes)486,466,56092,718,720
Size463.9 MB 88.4 MB
Events in quadrant A6,061,647579,045
Events in quadrant B3,521,772675,061
Events in quadrant C3,731,075572,989
Events in quadrant D4,205,665542,282

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223702
B0147352
C0155712
D0168352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A627565110.374502%
B62751392.215139%
C62753485.545817%
D62752443.888446%

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 7475 6275 579 579 7.75% 9.23%
B 7475 6276 55 55 0.74% 0.88%
C 7475 6276 236 236 3.16% 3.76%
D 7475 6276 208 208 2.78% 3.31%

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 7 64 1702830 10226.44 672 657 166.4
A 4 95 1120011 6724.93 672 657 166.4
A 3 14 299556 1795.75 672 657 166.4
B 4 206 448791 3072.88 692 668 145.8
B 4 171 88292 600.86 692 668 145.8
B 0 213 57004 386.31 692 668 145.8
C 15 230 682549 3764.3 656 651 181.1
C 13 3 213363 1174.24 656 651 181.1
C 12 249 105486 578.72 656 651 181.1
D 3 12 509465 2674.86 662 631 190.2
D 11 176 432893 2272.34 662 631 190.2
D 2 249 221610 1161.65 662 631 190.2

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