ASTROSAT CZTI

Data Quality Report

Orbit 52920

Creation date: 2025-07-17T00:18:03.291602
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/AS1C09_011T06_9000006484_52920cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52920cztM0_level2_quad_clean.evt
Size (bytes)974,433,60071,608,320
Size929.3 MB 68.3 MB
Events in quadrant A17,022,4724,861
Events in quadrant B3,792,466680,431
Events in quadrant C4,452,334594,895
Events in quadrant D10,286,890422,642

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0552783
B0157241
C0180001
D0352181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6670663999.535232%
B66711932.893119%
C66712954.422126%
D6671217732.633788%

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 7679 6668 6044 6044 78.71% 90.64%
B 7681 6672 38 38 0.49% 0.57%
C 7681 6672 161 161 2.10% 2.41%
D 7681 6672 2107 2107 27.43% 31.58%

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 9 191 15856251 262214.17 231 225 60.5
A 0 8 79336 1308.27 231 225 60.5
A 15 174 35128 577.2 231 225 60.5
B 10 254 305454 2074.1 696 672 146.9
B 4 81 213214 1446.39 696 672 146.9
B 12 32 144662 979.88 696 672 146.9
C 13 3 278072 1505.75 679 673 184.2
C 7 80 251910 1363.74 679 673 184.2
C 15 224 216350 1170.72 679 673 184.2
D 15 78 3464061 19724.62 615 586 175.6
D 8 48 2230746 12700.85 615 586 175.6
D 15 125 762017 4336.38 615 586 175.6

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