ASTROSAT CZTI

Data Quality Report

Orbit 20170525_G07_019T01_9000001244_level2

Creation date: 2025-11-13T19:41:26.226189
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/AS1G07_019T01_9000001244cztM0_level2.fits modeM0/AS1G07_019T01_9000001244cztM0_level2_quad_clean.evt
Size (bytes)538,185,600538,511,040
Size513.3 MB 513.6 MB
Events in quadrant A3,275,4083,268,064
Events in quadrant B3,104,9883,165,435
Events in quadrant C3,209,4003,112,667
Events in quadrant D2,734,0742,789,493

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01372520
B01410530
C01243490
D01486490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0910
B0910
C0910
D0910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011820
B011820
C011820
D011820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5791710911.883730%
B5791726234.528895%
C579178251.424452%
D5791627204.696457%

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 67008 57911 0 0 0.00% 0.00%
B 67008 57799 0 0 0.00% 0.00%
C 67008 57911 0 0 0.00% 0.00%
D 67008 57656 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 3205 11.24 851 795 214.4
A 7 110 2712 8.94 851 795 214.4
A 0 30 2417 7.56 851 795 214.4
B 2 9 2649 11.54 820 781 161.9
B 12 226 2098 8.13 820 781 161.9
B 14 254 2072 7.97 820 781 161.9
C 1 80 2390 7.21 847 784 222.8
C 1 81 2338 6.97 847 784 222.8
C 12 241 2272 6.68 847 784 222.8
D 6 231 2056 6.56 780 710 205.3
D 7 5 1942 6.0 780 710 205.3
D 6 83 1923 5.91 780 710 205.3

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