ASTROSAT CZTI

Data Quality Report

Orbit 54095

Creation date: 2025-09-28T11:30:15.901994
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_041T01_9000006510_54095cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54095cztM0_level2_quad_clean.evt
Size (bytes)489,021,12091,800,000
Size466.4 MB 87.5 MB
Events in quadrant A4,145,845615,092
Events in quadrant B3,809,186668,880
Events in quadrant C3,131,761579,725
Events in quadrant D6,535,285484,638

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166251
B0157691
C0138471
D0236921

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61772524.079650%
B61771602.590254%
C61771532.476931%
D617894215.247653%

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 7322 6178 236 236 3.22% 3.82%
B 7322 6178 47 47 0.64% 0.76%
C 7322 6178 60 60 0.82% 0.97%
D 7323 6179 754 754 10.30% 12.20%

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 12 115 984402 5988.57 662 647 164.3
A 0 8 223901 1359.05 662 647 164.3
A 15 174 200261 1215.14 662 647 164.3
B 15 20 748411 5423.24 660 638 137.9
B 0 213 92528 666.43 660 638 137.9
B 10 245 58898 422.53 660 638 137.9
C 13 3 246405 1378.12 651 644 178.3
C 15 233 103264 575.45 651 644 178.3
C 1 16 95558 532.24 651 644 178.3
D 15 78 1394522 7913.55 613 586 176.1
D 8 176 1159870 6581.4 613 586 176.1
D 3 12 523666 2969.59 613 586 176.1

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