ASTROSAT CZTI

Data Quality Report

Orbit 53948

Creation date: 2025-09-18T02:09:13.587673
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_057T04_9000006508_53948cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53948cztM0_level2_quad_clean.evt
Size (bytes)795,816,00072,671,040
Size758.9 MB 69.3 MB
Events in quadrant A3,252,443641,187
Events in quadrant B3,897,561667,802
Events in quadrant C9,457,020366,383
Events in quadrant D12,352,00477,109

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139941
B0159921
C0326241
D0411061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6419430.669886%
B64202403.738318%
C6420271942.352025%
D6420562887.663551%

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 7569 6420 16 16 0.21% 0.25%
B 7570 6421 160 160 2.11% 2.49%
C 7570 6421 2580 2580 34.08% 40.18%
D 7569 6420 3128 3128 41.33% 48.72%

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 3 14 162401 926.87 697 680 174.5
A 3 62 79921 454.16 697 680 174.5
A 15 174 66539 377.46 697 680 174.5
B 0 213 820937 5601.26 686 662 146.4
B 0 155 88678 601.02 686 662 146.4
B 3 16 55437 374.03 686 662 146.4
C 1 241 7115447 47683.91 538 531 149.2
C 13 3 73566 489.47 538 531 149.2
C 12 2 51627 342.44 538 531 149.2
D 8 176 11141145 197747.51 191 182 56.3
D 6 239 108809 1928.08 191 182 56.3
D 2 172 83185 1473.27 191 182 56.3

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