ASTROSAT CZTI

Data Quality Report

Orbit 20210429_A10_071T15_9000004346_level2

Creation date: 2025-12-25T02:56:50.896881
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_071T15_9000004346cztM0_level2.fits modeM0/AS1A10_071T15_9000004346cztM0_level2_quad_clean.evt
Size (bytes)554,135,040322,931,520
Size528.5 MB 308.0 MB
Events in quadrant A3,488,1801,602,584
Events in quadrant B3,301,0681,594,585
Events in quadrant C3,338,2501,513,300
Events in quadrant D2,916,1461,328,623

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011120
B011120
C011120
D011120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140860
B01651340
C01232000
D01408490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A544677421.362293%
B5446812842.357347%
C5446819953.662701%
D5446818393.376294%

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 68811 54466 0 0 0.00% 0.00%
B 68811 54466 0 0 0.00% 0.00%
C 68811 54465 0 0 0.00% 0.00%
D 68811 54449 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 3352 11.24 908 853 222.4
A 7 110 2715 8.37 908 853 222.4
A 9 19 2596 7.84 908 853 222.4
B 2 9 2643 10.28 872 832 176.1
B 5 128 2266 8.14 872 832 176.1
B 2 8 2262 8.12 872 832 176.1
C 12 241 2296 6.5 883 825 226.4
C 9 209 2289 6.47 883 825 226.4
C 3 126 2199 6.07 883 825 226.4
D 15 46 2290 6.93 832 759 220.9
D 3 14 2054 5.86 832 759 220.9
D 7 3 2010 5.66 832 759 220.9

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