ASTROSAT CZTI

Data Quality Report

Orbit 39126

Creation date: 2024-06-27T22:01:02.417360
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/AS1C06_010T05_9000005436_39126cztM0_level2.fits modeM0/AS1C06_010T05_9000005436_39126cztM0_level2_quad_clean.evt
Size (bytes)54,941,76016,891,200
Size52.4 MB 16.1 MB
Events in quadrant A545,001115,601
Events in quadrant B415,602118,845
Events in quadrant C430,569109,188
Events in quadrant D573,196101,336

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021632
B017311
C017371
D022891

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84980.942285%
B84910.117786%
C84910.117786%
D849161.884570%

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 849 849 3 3 0.35% 0.35%
B 849 849 0 0 0.00% 0.00%
C 849 849 0 0 0.00% 0.00%
D 849 849 12 12 1.41% 1.41%

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 10 83 117911 5086.86 107 105 23.2
A 9 143 8559 365.04 107 105 23.2
A 10 248 1970 80.53 107 105 23.2
B 6 51 3944 180.3 103 101 21.3
B 0 190 2734 123.53 103 101 21.3
B 12 111 2470 111.15 103 101 21.3
C 15 214 40805 1645.0 98 98 24.7
C 0 10 3713 146.08 98 98 24.7
C 9 187 2365 91.61 98 98 24.7
D 12 235 130142 5023.94 100 96 25.9
D 13 249 31390 1208.95 100 96 25.9
D 2 249 7571 288.77 100 96 25.9

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