ASTROSAT CZTI

Data Quality Report

Orbit 20210507_A10_071T29_9000004358_level2

Creation date: 2025-12-25T04:51:09.564572
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/AS1A10_071T29_9000004358cztM0_level2.fits modeM0/AS1A10_071T29_9000004358cztM0_level2_quad_clean.evt
Size (bytes)548,320,320365,857,920
Size522.9 MB 348.9 MB
Events in quadrant A3,405,4361,927,768
Events in quadrant B3,210,8241,916,863
Events in quadrant C3,312,1061,825,793
Events in quadrant D2,936,7441,666,240

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011100
B011100
C011100
D011100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01163840
B01701760
C01156680
D01198600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A545308151.494590%
B5453017243.161562%
C5453010551.934715%
D545308181.500092%

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 63045 54526 0 0 0.00% 0.00%
B 63045 54524 0 0 0.00% 0.00%
C 63045 54525 0 0 0.00% 0.00%
D 63045 54526 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 3311 11.3 888 831 219.4
A 7 110 2737 8.68 888 831 219.4
A 9 19 2510 7.65 888 831 219.4
B 2 9 2535 10.25 846 806 168.7
B 3 17 2159 8.02 846 806 168.7
B 2 8 2109 7.72 846 806 168.7
C 3 126 2276 6.48 876 818 224.8
C 12 241 2263 6.43 876 818 224.8
C 9 209 2259 6.41 876 818 224.8
D 15 46 2230 6.48 838 760 226.9
D 3 14 2101 5.91 838 760 226.9
D 7 3 2005 5.49 838 760 226.9

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