ASTROSAT CZTI

Data Quality Report

Orbit 54064

Creation date: 2025-09-26T10:39:57.080750
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_54064cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54064cztM0_level2_quad_clean.evt
Size (bytes)511,482,24088,410,240
Size487.8 MB 84.3 MB
Events in quadrant A3,544,163591,214
Events in quadrant B3,778,292654,503
Events in quadrant C4,485,795550,401
Events in quadrant D6,644,268448,737

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150015
B0157871
C0177151
D0240301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61873185.139809%
B61881963.167421%
C61883525.688429%
D6188116918.891403%

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 7256 6186 238 238 3.28% 3.85%
B 7258 6188 102 102 1.41% 1.65%
C 7258 6188 308 308 4.24% 4.98%
D 7258 6188 1113 1113 15.33% 17.99%

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 854847 5252.59 653 636 162.6
A 3 94 44739 271.19 653 636 162.6
A 4 3 33338 201.09 653 636 162.6
B 15 20 600260 4298.37 654 633 139.5
B 7 252 138053 985.08 654 633 139.5
B 0 213 117842 840.2 654 633 139.5
C 9 53 982636 5694.01 630 624 172.5
C 15 157 639294 3703.21 630 624 172.5
C 12 250 159812 923.02 630 624 172.5
D 14 20 1284079 7661.71 585 558 167.5
D 8 176 1009175 6020.73 585 558 167.5
D 10 172 744709 4442.05 585 558 167.5

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