ASTROSAT CZTI

Data Quality Report

Orbit 20210415_A10_071T01_9000004310_level2

Creation date: 2025-12-24T17:05:23.620801
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_071T01_9000004310cztM0_level2.fits modeM0/AS1A10_071T01_9000004310cztM0_level2_quad_clean.evt
Size (bytes)604,748,160403,508,160
Size576.7 MB 384.8 MB
Events in quadrant A3,870,0702,205,487
Events in quadrant B3,448,6601,971,536
Events in quadrant C3,675,5242,056,805
Events in quadrant D3,224,7701,891,369

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012200
B012200
C012200
D012200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01256220
B02433220
C01304720
D01451940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A596397251.215647%
B59639895415.013666%
C5963913322.233438%
D5963922233.727427%

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 68599 59639 0 0 0.00% 0.00%
B 68599 59635 0 0 0.00% 0.00%
C 68599 59637 0 0 0.00% 0.00%
D 68598 59578 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 3804 11.66 1008 947 245.1
A 7 110 2983 8.31 1008 947 245.1
A 0 30 2881 7.89 1008 947 245.1
B 2 9 2722 10.27 909 869 180.4
B 3 17 2290 7.88 909 869 180.4
B 5 255 2284 7.84 909 869 180.4
C 1 81 2820 7.73 970 907 247.4
C 1 80 2758 7.48 970 907 247.4
C 12 241 2554 6.66 970 907 247.4
D 15 46 2424 6.47 920 838 245.2
D 3 14 2318 6.03 920 838 245.2
D 10 189 2295 5.94 920 838 245.2

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