ASTROSAT CZTI

Data Quality Report

Orbit 52005

Creation date: 2025-05-10T06:27:52.663752
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_9000006468_52005cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52005cztM0_level2_quad_clean.evt
Size (bytes)876,058,56079,116,480
Size835.5 MB 75.5 MB
Events in quadrant A9,914,008389,284
Events in quadrant B7,886,416535,761
Events in quadrant C6,588,437541,836
Events in quadrant D7,546,817481,838

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339331
B0278721
C0240411
D0269511

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6395258140.359656%
B6394149023.303097%
C639488213.794182%
D6394106016.578042%

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 7435 6396 2314 2314 31.12% 36.18%
B 7434 6395 874 874 11.76% 13.67%
C 7434 6395 829 829 11.15% 12.96%
D 7433 6394 956 956 12.86% 14.95%

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 64 4759326 35438.35 532 520 134.3
A 2 48 1700510 12659.66 532 520 134.3
A 3 14 453540 3373.59 532 520 134.3
B 7 0 3810002 29165.22 615 595 130.6
B 4 206 428485 3275.97 615 595 130.6
B 4 171 192187 1466.85 615 595 130.6
C 15 224 2728728 15918.76 617 611 171.4
C 13 3 446630 2602.55 617 611 171.4
C 7 190 381276 2221.21 617 611 171.4
D 6 42 1736347 10029.7 601 573 173.1
D 8 176 901296 5204.58 601 573 173.1
D 13 170 654869 3780.67 601 573 173.1

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