ASTROSAT CZTI

Data Quality Report

Orbit 45252

Creation date: 2024-06-27T23:11:30.509992
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/AS1A13_023T05_9000006062_45252cztM0_level2.fits modeM0/AS1A13_023T05_9000006062_45252cztM0_level2_quad_clean.evt
Size (bytes)639,195,840155,543,040
Size609.6 MB 148.3 MB
Events in quadrant A7,523,6941,034,457
Events in quadrant B4,495,1651,076,771
Events in quadrant C4,436,0141,023,502
Events in quadrant D6,456,611904,796

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301852
B0201352
C0201382
D0259152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A96681711.768722%
B9668920.951593%
C9668300.310302%
D96683823.951179%

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 11498 9670 22 22 0.19% 0.23%
B 11498 9670 44 44 0.38% 0.46%
C 11498 9670 23 23 0.20% 0.24%
D 11498 9669 387 387 3.37% 4.00%

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 10 83 3272361 14600.0 1082 1060 224.1
A 13 248 59811 262.21 1082 1060 224.1
A 0 243 14469 59.85 1082 1060 224.1
B 5 32 160389 744.1 1083 1050 214.1
B 12 111 27950 125.62 1083 1050 214.1
B 11 111 25717 115.19 1083 1050 214.1
C 14 254 174043 685.84 1069 1075 252.2
C 12 2 37865 145.88 1069 1075 252.2
C 1 3 21178 79.71 1069 1075 252.2
D 13 249 1229385 4649.58 1045 1012 264.2
D 11 241 450834 1702.64 1045 1012 264.2
D 13 171 165748 623.55 1045 1012 264.2

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