ASTROSAT CZTI

Data Quality Report

Orbit 54622

Creation date: 2025-11-02T11:12:31.249924
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_066T07_9000006522_54622cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54622cztM0_level2_quad_clean.evt
Size (bytes)591,183,360115,940,160
Size563.8 MB 110.6 MB
Events in quadrant A4,161,346758,248
Events in quadrant B3,702,537817,632
Events in quadrant C5,169,673708,315
Events in quadrant D8,223,914664,516

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183570
B0171900
C0213400
D0301940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80811231.522089%
B8082350.433061%
C80822783.439743%
D80822913.600594%

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 8081 8081 119 119 1.47% 1.47%
B 8082 8082 10 10 0.12% 0.12%
C 8082 8082 262 262 3.24% 3.24%
D 8082 8082 233 233 2.88% 2.88%

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 11 3 264953 1241.54 864 844 212.7
A 0 8 240225 1125.29 864 844 212.7
A 5 243 71253 330.98 864 844 212.7
B 5 172 174048 916.23 865 833 189.1
B 10 247 59294 309.23 865 833 189.1
B 10 14 31137 160.29 865 833 189.1
C 13 3 1385143 6041.33 833 827 229.1
C 12 249 133856 580.56 833 827 229.1
C 14 96 76232 329.08 833 827 229.1
D 2 62 4241073 18025.73 821 782 235.2
D 2 172 347009 1471.83 821 782 235.2
D 1 232 181768 769.38 821 782 235.2

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