ASTROSAT CZTI

Data Quality Report

Orbit 39915

Creation date: 2024-06-27T22:10:15.846163
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_068T03_9000005508_39915cztM0_level2.fits modeM0/AS1A12_068T03_9000005508_39915cztM0_level2_quad_clean.evt
Size (bytes)368,899,20097,410,240
Size351.8 MB 92.9 MB
Events in quadrant A3,199,625652,430
Events in quadrant B2,975,617662,971
Events in quadrant C3,182,598631,908
Events in quadrant D3,831,505583,785

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131633
B0129472
C0132462
D0155672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5988290.484302%
B5988731.219105%
C59881181.970608%
D59881742.905812%

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 7330 5989 16 16 0.22% 0.27%
B 7329 5987 32 32 0.44% 0.53%
C 7329 5987 118 118 1.61% 1.97%
D 7329 5987 182 182 2.48% 3.04%

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 515942 3772.53 666 652 136.6
A 2 79 41192 296.8 666 652 136.6
A 9 143 25786 184.01 666 652 136.6
B 4 171 196541 1512.21 658 639 129.5
B 4 170 58238 444.62 658 639 129.5
B 5 32 40734 309.5 658 639 129.5
C 14 254 308122 2025.67 645 650 151.8
C 15 214 244657 1607.56 645 650 151.8
C 9 54 81276 531.18 645 650 151.8
D 2 249 665818 4152.54 648 631 160.2
D 13 249 234848 1462.14 648 631 160.2
D 2 250 175445 1091.3 648 631 160.2

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