ASTROSAT CZTI

Data Quality Report

Orbit 52676

Creation date: 2025-06-24T11:34:01.476784
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_011T07_9000006480_52676cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52676cztM0_level2_quad_clean.evt
Size (bytes)873,930,24081,717,120
Size833.4 MB 77.9 MB
Events in quadrant A3,605,097632,112
Events in quadrant B4,734,551649,503
Events in quadrant C10,287,967473,033
Events in quadrant D13,190,736239,893

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154670
B0189770
C0353800
D0439050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6879370.537869%
B68793284.768135%
C6880173225.174419%
D6879404058.729466%

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 6879 6879 27 27 0.39% 0.39%
B 6879 6879 195 195 2.83% 2.83%
C 6880 6880 1943 1943 28.24% 28.24%
D 6879 6879 3941 3941 57.29% 57.29%

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 3 14 418246 2395.74 694 674 174.3
A 5 240 76669 436.01 694 674 174.3
A 14 239 68169 387.24 694 674 174.3
B 10 128 589025 4094.63 678 653 143.7
B 2 249 488370 3394.14 678 653 143.7
B 12 32 334376 2322.46 678 653 143.7
C 15 248 6803255 39817.98 617 613 170.8
C 13 3 347882 2032.67 617 613 170.8
C 12 252 263112 1536.49 617 613 170.8
D 8 176 8856039 78357.26 384 364 113.0
D 2 62 1543905 13657.64 384 364 113.0
D 6 42 653346 5777.75 384 364 113.0

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