ASTROSAT CZTI

Data Quality Report

Orbit 54047

Creation date: 2025-09-24T19:17:28.697852
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/AS1A14_041T01_9000006510_54047cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54047cztM0_level2_quad_clean.evt
Size (bytes)628,894,08080,444,160
Size599.8 MB 76.7 MB
Events in quadrant A3,751,439588,796
Events in quadrant B4,371,541637,883
Events in quadrant C4,053,671535,253
Events in quadrant D10,611,511232,828

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156432
B0171541
C0166771
D0358931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63182734.320988%
B63183074.859133%
C63184537.169991%
D6318377459.734093%

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 7218 6319 213 213 2.95% 3.37%
B 7218 6318 196 196 2.72% 3.10%
C 7218 6319 294 294 4.07% 4.65%
D 7217 6318 2868 2868 39.74% 45.39%

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 15 174 735658 4511.06 661 646 162.9
A 12 115 222667 1362.63 661 646 162.9
A 3 14 53256 322.89 661 646 162.9
B 5 236 788098 5643.95 653 628 139.5
B 5 185 256917 1836.87 653 628 139.5
B 4 171 221845 1585.5 653 628 139.5
C 13 3 643323 3792.38 622 615 169.5
C 9 38 517119 3047.7 622 615 169.5
C 4 5 206982 1217.69 622 615 169.5
D 8 176 8441070 77902.91 374 357 108.3
D 2 62 279751 2578.65 374 357 108.3
D 3 12 171291 1577.62 374 357 108.3

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