ASTROSAT CZTI

Data Quality Report

Orbit 02098

Creation date: 2026-03-07T11:31:14.569677
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/AS1P01_175T03_9000000322_02098cztM0_level2.fits modeM0/AS1P01_175T03_9000000322_02098cztM0_level2_quad_clean.evt
Size (bytes)901,690,560110,540,160
Size859.9 MB 105.4 MB
Events in quadrant A8,519,072750,673
Events in quadrant B8,306,896777,131
Events in quadrant C7,421,542737,714
Events in quadrant D8,655,992647,770

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297023
B0290702
C0264562
D0302082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62251492.393574%
B6225751.204819%
C6225190.305221%
D62254006.425703%

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 6226 482 482 6.45% 7.74%
B 7475 6226 395 395 5.28% 6.34%
C 7475 6226 167 167 2.23% 2.68%
D 7475 6226 938 938 12.55% 15.07%

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 0 128 644416 1361.43 1985 1996 471.9
A 0 199 273080 574.49 1985 1996 471.9
A 0 1 10708 18.46 1985 1996 471.9
B 4 48 190463 387.04 2091 2102 486.7
B 8 3 120085 242.43 2091 2102 486.7
B 5 68 44321 86.75 2091 2102 486.7
C 2 53 36587 66.72 1881 1941 519.2
C 10 65 28437 51.03 1881 1941 519.2
C 5 234 11332 18.09 1881 1941 519.2
D 2 32 1838289 3342.0 1788 1856 549.5
D 13 169 75141 133.37 1788 1856 549.5
D 13 88 28770 48.98 1788 1856 549.5

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