ASTROSAT CZTI

Data Quality Report

Orbit 07342

Creation date: 2024-06-27T15:18:46.134753
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/AS1G06_157T02_9000001008_07342cztM0_level2.evt modeM0/AS1G06_157T02_9000001008_07342cztM0_level2_quad_clean.evt
Size (bytes)504,875,52096,871,680
Size481.5 MB 92.4 MB
Events in quadrant A3,345,101605,715
Events in quadrant B3,612,922618,849
Events in quadrant C3,288,001613,683
Events in quadrant D4,542,667581,607

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152102
B0158621
C0152181
D0187981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73841742.356446%
B73841742.356446%
C7384831.124052%
D73842863.873239%

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 7544 7385 1 1 0.01% 0.01%
B 7544 7385 6 6 0.08% 0.08%
C 7544 7385 7 7 0.09% 0.09%
D 7544 7385 114 114 1.51% 1.54%

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 15 234 26726 146.59 857 836 176.6
A 15 239 16527 88.84 857 836 176.6
A 0 226 7914 40.08 857 836 176.6
B 4 81 91176 536.83 862 838 168.3
B 11 51 73463 431.57 862 838 168.3
B 0 214 47897 279.65 862 838 168.3
C 9 68 42585 214.92 830 833 194.3
C 13 61 6592 29.64 830 833 194.3
C 10 22 5331 23.15 830 833 194.3
D 2 216 1012057 4934.02 823 797 205.0
D 8 195 133488 647.41 823 797 205.0
D 2 14 109053 528.19 823 797 205.0

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