ASTROSAT CZTI

Data Quality Report

Orbit 38248

Creation date: 2024-06-27T21:50:17.118983
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/AS1A07_145T01_9000005370_38248cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38248cztM0_level2_quad_clean.evt
Size (bytes)469,160,64088,986,240
Size447.4 MB 84.9 MB
Events in quadrant A2,863,211609,115
Events in quadrant B2,632,865625,697
Events in quadrant C3,719,755588,225
Events in quadrant D7,731,571493,519

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119003
B0115302
C0144632
D0268202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A540590.166512%
B5405380.703053%
C54052294.236818%
D540592517.113784%

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 7138 5406 6 6 0.08% 0.11%
B 7138 5406 21 21 0.29% 0.39%
C 7138 5406 188 188 2.63% 3.48%
D 7138 5406 1106 1106 15.49% 20.46%

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 380745 3116.24 601 589 122.0
A 12 189 124765 1017.9 601 589 122.0
A 13 6 12844 100.46 601 589 122.0
B 5 184 161233 1367.63 601 586 117.5
B 0 229 43235 363.08 601 586 117.5
B 5 172 38168 319.95 601 586 117.5
C 9 236 655692 4853.56 578 582 135.0
C 14 254 329233 2434.9 578 582 135.0
C 15 214 223910 1654.59 578 582 135.0
D 10 203 3412067 24681.7 566 549 138.2
D 12 235 1684013 12179.55 566 549 138.2
D 13 249 176721 1274.57 566 549 138.2

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