ASTROSAT CZTI

Data Quality Report

Orbit 38438

Creation date: 2024-06-27T21:52:45.288356
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/AS1A12_018T01_9000005386_38438cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38438cztM0_level2_quad_clean.evt
Size (bytes)382,800,96097,335,360
Size365.1 MB 92.8 MB
Events in quadrant A3,049,124655,796
Events in quadrant B3,750,348645,432
Events in quadrant C2,870,816645,942
Events in quadrant D4,037,030584,212

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127803
B0152202
C0122462
D0161142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5947180.302674%
B59472323.901127%
C5947160.269043%
D59472444.102909%

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 7290 5948 13 13 0.18% 0.22%
B 7290 5948 131 131 1.80% 2.20%
C 7290 5948 8 8 0.11% 0.13%
D 7290 5948 213 213 2.92% 3.58%

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 427397 3190.12 657 642 133.8
A 9 143 44223 325.78 657 642 133.8
A 13 6 18408 132.81 657 642 133.8
B 5 184 622862 5030.9 647 629 123.7
B 8 3 260245 2099.05 647 629 123.7
B 0 183 156396 1259.41 647 629 123.7
C 15 214 253604 1669.51 646 650 151.5
C 14 254 49798 324.38 646 650 151.5
C 0 10 26889 173.18 646 650 151.5
D 13 249 421131 2753.28 632 615 152.7
D 2 16 302437 1976.14 632 615 152.7
D 2 153 263713 1722.6 632 615 152.7

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