ASTROSAT CZTI

Data Quality Report

Orbit 53011

Creation date: 2025-07-17T04:23:26.078532
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_9000006488_53011cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53011cztM0_level2_quad_clean.evt
Size (bytes)1,195,741,44063,017,280
Size1.1 GB 60.1 MB
Events in quadrant A17,048,36423,169
Events in quadrant B3,388,993694,421
Events in quadrant C8,650,851522,617
Events in quadrant D14,637,587182,478

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0552990
B0151670
C0305560
D0482341

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6956679097.613571%
B6956670.963197%
C6956149821.535365%
D6955513373.803019%

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 6955 6955 6279 6279 90.28% 90.28%
B 6956 6956 37 37 0.53% 0.53%
C 6956 6956 1248 1248 17.94% 17.94%
D 6954 6954 4248 4248 61.09% 61.09%

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 9 191 13895352 208981.92 255 249 66.5
A 15 190 1337099 20106.18 255 249 66.5
A 7 206 280999 4222.47 255 249 66.5
B 10 191 71518 461.95 720 694 153.3
B 4 81 66853 431.52 720 694 153.3
B 10 247 57026 367.43 720 694 153.3
C 15 224 3071712 17051.07 654 648 180.1
C 1 16 863647 4791.52 654 648 180.1
C 15 147 619142 3433.98 654 648 180.1
D 2 62 5982756 47650.08 415 393 125.5
D 8 176 3865046 30782.32 415 393 125.5
D 12 17 1774713 14132.62 415 393 125.5

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