ASTROSAT CZTI

Data Quality Report

Orbit 20170829_A03_073T01_9000001498_level2

Creation date: 2025-11-16T21:48:15.685786
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/AS1A03_073T01_9000001498cztM0_level2.fits modeM0/AS1A03_073T01_9000001498cztM0_level2_quad_clean.evt
Size (bytes)706,314,240721,751,040
Size673.6 MB 688.3 MB
Events in quadrant A4,282,0664,346,921
Events in quadrant B4,124,7344,304,669
Events in quadrant C4,246,7124,259,208
Events in quadrant D3,646,9523,858,842

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01170
B01170
C01170
D01170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015210
B015160
C015180
D015180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01541220
B01625920
C01528390
D01970080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A742688031.081219%
B7399712631.706826%
C743195280.710451%
D7426518352.470881%

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 86308 75042 0 0 0.00% 0.00%
B 86308 74809 0 0 0.00% 0.00%
C 86308 75054 0 0 0.00% 0.00%
D 86308 74748 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 3999 10.63 1113 1043 278.2
A 7 110 3460 8.69 1113 1043 278.2
A 9 19 3150 7.57 1113 1043 278.2
B 2 9 3520 11.55 1087 1035 215.1
B 12 226 2744 7.94 1087 1035 215.1
B 3 80 2726 7.86 1087 1035 215.1
C 1 81 3230 7.59 1121 1045 288.0
C 1 80 3224 7.57 1121 1045 288.0
C 1 65 2895 6.42 1121 1045 288.0
D 3 14 2681 6.19 1040 948 279.8
D 6 231 2624 5.99 1040 948 279.8
D 7 5 2588 5.86 1040 948 279.8

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