ASTROSAT CZTI

Data Quality Report

Orbit 52110

Creation date: 2025-05-17T08:44:12.562122
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/AS1C09_011T07_9000006470_52110cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52110cztM0_level2_quad_clean.evt
Size (bytes)1,089,527,04079,041,600
Size1.0 GB 75.4 MB
Events in quadrant A4,971,787679,927
Events in quadrant B6,875,494655,130
Events in quadrant C9,793,449519,511
Events in quadrant D18,118,71723,713

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016111
B01579
C016010
D016012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011
B022
C011
D011

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212751315
B0271741724
C0370632823
D0639035131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74261992.679774%
B7408109514.781317%
C7367210428.559794%
D7352716897.497280%

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 8513 7476 175 175 2.06% 2.34%
B 8513 7457 660 660 7.75% 8.85%
C 8508 7385 1572 1572 18.48% 21.29%
D 8140 7371 6181 6181 75.93% 83.86%

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 8 43 898690 4549.05 790 768 197.4
A 4 249 224965 1135.83 790 768 197.4
A 4 3 215969 1090.25 790 768 197.4
B 8 3 1534727 9624.3 752 727 159.4
B 12 32 1156956 7254.17 752 727 159.4
B 10 44 158130 987.54 752 727 159.4
C 15 224 5080806 26907.27 686 681 188.8
C 2 239 792546 4194.17 686 681 188.8
C 13 3 410732 2171.87 686 681 188.8
D 6 42 14664140 202129.82 245 233 72.5
D 15 94 975458 13442.67 245 233 72.5
D 12 17 548307 7554.75 245 233 72.5

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