ASTROSAT CZTI

Data Quality Report

Orbit 49852

Creation date: 2024-12-16T14:28:49.337007
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_037T01_9000006440_49852cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49852cztM0_level2_quad_clean.evt
Size (bytes)1,022,408,64059,909,760
Size975.0 MB 57.1 MB
Events in quadrant A9,808,055510,097
Events in quadrant B3,297,471631,514
Events in quadrant C12,160,080130,022
Events in quadrant D12,107,679109,677

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0333870
B0141040
C0403070
D0401390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6101211534.666448%
B6101991.622685%
C6101584795.836748%
D61006100100.000000%

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 7176 6101 1883 1883 26.24% 30.86%
B 7176 6102 45 45 0.63% 0.74%
C 7175 6100 3219 3219 44.86% 52.77%
D 7174 6099 2664 2664 37.13% 43.68%

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 3 84 3868478 25891.59 580 565 149.4
A 0 98 779533 5214.37 580 565 149.4
A 8 38 565296 3780.28 580 565 149.4
B 0 229 227507 1619.23 653 632 140.1
B 4 206 178373 1268.56 653 632 140.1
B 10 28 128148 910.1 653 632 140.1
C 15 189 3985067 71180.66 164 160 56.0
C 1 44 1552119 27721.97 164 160 56.0
C 15 197 1396961 24950.45 164 160 56.0
D 7 61 5063890 88603.95 148 140 57.2
D 8 129 2704890 47326.89 148 140 57.2
D 15 185 982028 17180.78 148 140 57.2

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