ASTROSAT CZTI

Data Quality Report

Orbit 52617

Creation date: 2025-06-20T13:37:22.137467
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_52617cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52617cztM0_level2_quad_clean.evt
Size (bytes)1,008,434,88073,025,280
Size961.7 MB 69.6 MB
Events in quadrant A3,092,009622,756
Events in quadrant B9,225,033574,238
Events in quadrant C16,679,24042,010
Events in quadrant D7,809,283499,219

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145042
B0321782
C0541102
D0280002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6776640.944510%
B6777145421.454921%
C6776637394.052538%
D6776101114.920307%

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 6886 6779 19 19 0.28% 0.28%
B 6887 6780 1333 1333 19.36% 19.66%
C 6885 6777 5465 5465 79.38% 80.64%
D 6886 6779 853 853 12.39% 12.58%

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 4 249 65094 361.59 700 679 178.1
A 3 46 53447 296.21 700 679 178.1
A 4 3 30302 166.29 700 679 178.1
B 10 254 4197227 29298.98 667 644 143.2
B 10 128 981207 6845.93 667 644 143.2
B 1 255 332827 2319.18 667 644 143.2
C 15 248 15557600 282430.56 198 196 55.1
C 12 254 176706 3204.38 198 196 55.1
C 15 224 42995 776.98 198 196 55.1
D 8 176 2283927 12630.92 632 603 180.8
D 2 62 1786446 9878.95 632 603 180.8
D 6 42 284741 1571.8 632 603 180.8

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