ASTROSAT CZTI

Data Quality Report

Orbit 54679

Creation date: 2025-11-10T13:06:32.697497
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_54679cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54679cztM0_level2_quad_clean.evt
Size (bytes)566,953,92099,342,720
Size540.7 MB 94.7 MB
Events in quadrant A3,926,361671,229
Events in quadrant B3,427,807724,445
Events in quadrant C3,691,284647,209
Events in quadrant D9,390,639471,636

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169971
B0153671
C0161451
D0328683

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70912102.961500%
B70911321.861515%
C7092841.184433%
D7091174924.665068%

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 7566 7092 135 135 1.78% 1.90%
B 7566 7092 23 23 0.30% 0.32%
C 7567 7093 43 43 0.57% 0.61%
D 7565 7091 1644 1644 21.73% 23.18%

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 7 14 387888 2040.51 765 743 189.7
A 3 14 352826 1855.71 765 743 189.7
A 11 3 79938 417.41 765 743 189.7
B 2 249 133606 793.16 768 740 167.5
B 0 213 119070 706.38 768 740 167.5
B 10 247 68612 405.17 768 740 167.5
C 4 5 274242 1310.02 754 748 208.8
C 14 254 150622 717.89 754 748 208.8
C 6 223 106050 504.39 754 748 208.8
D 11 129 5158718 27657.62 648 619 186.5
D 2 62 729475 3908.11 648 619 186.5
D 11 176 413664 2214.74 648 619 186.5

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