ASTROSAT CZTI

Data Quality Report

Orbit 42918

Creation date: 2024-06-27T22:45:47.231216
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/AS1T05_143T01_9000005830_42918cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42918cztM0_level2_quad_clean.evt
Size (bytes)497,666,880108,665,280
Size474.6 MB 103.6 MB
Events in quadrant A4,382,236745,553
Events in quadrant B4,915,405727,587
Events in quadrant C3,256,676722,863
Events in quadrant D5,336,835617,987

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170182
B0191842
C0139742
D0205152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68321622.371194%
B68335197.595492%
C683360.087809%
D68336339.263867%

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 9878 6834 142 142 1.44% 2.08%
B 9879 6835 332 332 3.36% 4.86%
C 9879 6835 1 1 0.01% 0.01%
D 9879 6835 629 629 6.37% 9.20%

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 686605 4468.44 750 734 153.5
A 15 237 681610 4435.89 750 734 153.5
A 15 222 69023 444.9 750 734 153.5
B 4 81 1963600 13635.93 732 712 143.9
B 4 171 31376 213.02 732 712 143.9
B 3 112 18311 122.26 732 712 143.9
C 15 214 276304 1607.28 733 737 171.4
C 8 79 60276 347.27 733 737 171.4
C 12 2 36622 209.3 733 737 171.4
D 12 233 1122192 6463.6 707 686 173.5
D 13 249 401650 2310.88 707 686 173.5
D 1 47 326587 1878.27 707 686 173.5

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