ASTROSAT CZTI

Data Quality Report

Orbit 58585

Creation date: 2026-07-27T01:34:28.408303
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_044T04_9000006592_58585cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58585cztM0_level2_quad_clean.evt
Size (bytes)423,115,20096,900,480
Size403.5 MB 92.4 MB
Events in quadrant A3,432,562646,144
Events in quadrant B4,054,222678,473
Events in quadrant C3,687,716607,980
Events in quadrant D3,993,179558,595

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145641
B0162961
C0153811
D0162754

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6358741.163888%
B63583064.812834%
C63581872.941176%
D63572423.806827%

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 7563 6359 30 30 0.40% 0.47%
B 7563 6358 197 197 2.60% 3.10%
C 7563 6359 177 177 2.34% 2.78%
D 7562 6358 221 221 2.92% 3.48%

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 15 233 283125 1566.48 715 697 180.3
A 13 248 107328 591.43 715 697 180.3
A 10 17 87420 481.01 715 697 180.3
B 6 255 694123 4626.01 703 679 149.9
B 4 171 197215 1311.1 703 679 149.9
B 5 172 93602 619.9 703 679 149.9
C 14 245 369200 1923.35 689 682 191.6
C 13 3 278475 1449.84 689 682 191.6
C 4 5 100529 521.12 689 682 191.6
D 15 94 606210 3121.79 679 647 194.0
D 5 38 255576 1314.21 679 647 194.0
D 2 249 141716 727.24 679 647 194.0

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