ASTROSAT CZTI

Data Quality Report

Orbit 20251009_A14_126T15_9000006516_level2

Creation date: 2025-11-01T09:23:39.066687
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_126T15_9000006516cztM0_level2.fits modeM0/AS1A14_126T15_9000006516cztM0_level2_quad_clean.evt
Size (bytes)4,231,944,0002,230,246,080
Size3.9 GB 2.1 GB
Events in quadrant A26,779,3889,180,203
Events in quadrant B24,968,8169,701,383
Events in quadrant C23,800,3487,528,108
Events in quadrant D15,527,7864,178,376

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109480
B0109440
C0109410
D0109420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012258060
B012747420
C017518260
D029317420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06320
B06310
C06320
D06310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A539295144382.677199%
B539171149942.780936%
C5391207534313.975182%
D53908423931944.393638%

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 603739 539083 0 0 0.00% 0.00%
B 603739 538661 0 0 0.00% 0.00%
C 603739 537535 0 0 0.00% 0.00%
D 603739 504249 0 0 0.00% 0.00%

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 14 188 30253 10.04 7046 6508 2366.0
A 9 255 27195 8.74 7046 6508 2366.0
A 14 204 24826 7.74 7046 6508 2366.0
B 2 9 29206 14.83 6623 6285 1546.0
B 2 8 26311 12.95 6623 6285 1546.0
B 9 173 20186 8.99 6623 6285 1546.0
C 2 31 18964 5.95 6366 5789 2212.5
C 15 127 18468 5.73 6366 5789 2212.5
C 7 221 18124 5.58 6366 5789 2212.5
D 6 218 19838 10.53 4437 3924 1510.5
D 15 11 14926 7.28 4437 3924 1510.5
D 6 159 14504 7.0 4437 3924 1510.5

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