ASTROSAT CZTI

Data Quality Report

Orbit 20220908_C07_001T11_9000005336_level2

Creation date: 2026-01-05T06:23:00.240281
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/AS1C07_001T11_9000005336cztM0_level2.fits modeM0/AS1C07_001T11_9000005336cztM0_level2_quad_clean.evt
Size (bytes)525,081,600775,033,920
Size500.8 MB 739.1 MB
Events in quadrant A3,190,6265,193,310
Events in quadrant B3,027,8965,137,476
Events in quadrant C3,168,0785,031,778
Events in quadrant D2,514,9784,116,146

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01236360
B01404590
C01237210
D02059420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02250
B02250
C02250
D02250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011920
B011920
C011920
D011920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A582571530.262629%
B5825711892.040956%
C582573720.638550%
D58257884215.177575%

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 80807 58255 0 0 0.00% 0.00%
B 80807 58181 0 0 0.00% 0.00%
C 80808 58248 0 0 0.00% 0.00%
D 80808 58111 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 0 29 2714 9.27 834 785 208.1
A 9 19 2647 8.95 834 785 208.1
A 7 110 2603 8.74 834 785 208.1
B 2 9 2666 12.18 805 773 155.5
B 3 80 2428 10.64 805 773 155.5
B 5 128 2170 8.99 805 773 155.5
C 1 81 2654 8.72 837 786 214.2
C 1 80 2600 8.47 837 786 214.2
C 3 203 2469 7.86 837 786 214.2
D 7 3 1915 6.5 718 654 193.9
D 10 189 1857 6.21 718 654 193.9
D 4 160 1849 6.16 718 654 193.9

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