ASTROSAT CZTI

Data Quality Report

Orbit 52582

Creation date: 2025-06-18T02:05:31.004144
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_9000006478_52582cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52582cztM0_level2_quad_clean.evt
Size (bytes)759,919,68080,703,360
Size724.7 MB 77.0 MB
Events in quadrant A4,433,515591,561
Events in quadrant B6,917,381509,065
Events in quadrant C6,418,964499,825
Events in quadrant D9,864,289396,049

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177671
B0248111
C0236621
D0338131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64005057.890625%
B6401157024.527418%
C6401111817.466021%
D6401222734.791439%

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 7440 6400 408 408 5.48% 6.38%
B 7441 6401 1403 1403 18.85% 21.92%
C 7441 6402 1007 1007 13.53% 15.73%
D 7441 6401 2259 2259 30.36% 35.29%

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 4 249 1065642 6456.06 663 648 165.0
A 3 114 346221 2094.89 663 648 165.0
A 5 243 139370 840.94 663 648 165.0
B 10 44 3214252 25402.25 591 573 126.5
B 1 238 318444 2512.58 591 573 126.5
B 10 254 260777 2056.76 591 573 126.5
C 15 248 2555065 15017.96 613 608 170.1
C 13 3 909259 5342.07 613 608 170.1
C 15 224 264571 1551.87 613 608 170.1
D 6 42 5501372 33925.1 565 539 162.1
D 15 125 925932 5707.14 565 539 162.1
D 8 176 406994 2506.72 565 539 162.1

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