ASTROSAT CZTI

Data Quality Report

Orbit 48399

Creation date: 2024-09-09T09:44:55.164712
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_029T01_9000006426_48399cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48399cztM0_level2_quad_clean.evt
Size (bytes)860,112,000185,846,400
Size820.3 MB 177.2 MB
Events in quadrant A12,315,4271,212,399
Events in quadrant B7,779,1011,237,533
Events in quadrant C5,039,4611,228,180
Events in quadrant D5,771,8831,115,652

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0443202
B0317424
C0243772
D0263902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02440
C02440
D02440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A120525484.546963%
B120526735.584135%
C12052150.124461%
D12052970.804846%

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 13502 12054 204 204 1.51% 1.69%
B 13502 12054 429 429 3.18% 3.56%
C 13502 12054 1 1 0.01% 0.01%
D 13502 12054 76 76 0.56% 0.63%

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 6823982 25716.97 1276 1249 265.3
A 13 248 549114 2065.07 1276 1249 265.3
A 13 254 22802 81.24 1276 1249 265.3
B 12 16 2372807 9513.26 1263 1224 249.3
B 4 21 323750 1293.77 1263 1224 249.3
B 8 234 33230 128.39 1263 1224 249.3
C 15 208 33065 105.99 1276 1285 299.8
C 12 249 17278 53.34 1276 1285 299.8
C 12 2 13546 40.89 1276 1285 299.8
D 2 249 200213 622.82 1272 1232 319.5
D 2 165 190340 591.92 1272 1232 319.5
D 13 171 145430 451.35 1272 1232 319.5

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