ASTROSAT CZTI

Data Quality Report

Orbit 15283

Creation date: 2024-06-27T17:06:35.947562
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/AS1G08_037T01_9000002256_15283cztM0_level2.evt modeM0/AS1G08_037T01_9000002256_15283cztM0_level2_quad_clean.evt
Size (bytes)466,084,800108,777,600
Size444.5 MB 103.7 MB
Events in quadrant A3,265,050736,617
Events in quadrant B4,094,292724,209
Events in quadrant C3,246,341712,165
Events in quadrant D3,089,085689,017

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136642
B0163091
C0133561
D0132651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61951011.630347%
B61952984.810331%
C6195721.162228%
D6195731.178370%

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 7396 6196 1 1 0.01% 0.02%
B 7396 6196 138 138 1.87% 2.23%
C 7396 6196 0 0 0.00% 0.00%
D 7396 6196 2 2 0.03% 0.03%

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 12 189 94327 564.88 821 807 165.6
A 9 143 10570 58.97 821 807 165.6
A 0 226 7334 39.42 821 807 165.6
B 10 16 788573 5168.05 795 777 152.4
B 0 219 50763 327.91 795 777 152.4
B 3 209 36744 235.95 795 777 152.4
C 3 233 202885 1128.75 778 783 179.1
C 7 247 11119 57.73 778 783 179.1
C 13 61 5584 26.81 778 783 179.1
D 7 38 37785 194.29 790 768 190.5
D 2 234 23151 117.48 790 768 190.5
D 2 152 17160 86.04 790 768 190.5

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