ASTROSAT CZTI

Data Quality Report

Orbit 51046

Creation date: 2025-03-06T15:58:25.949758
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/AS1C07_001T02_9000006452_51046cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51046cztM0_level2_quad_clean.evt
Size (bytes)715,311,36088,902,720
Size682.2 MB 84.8 MB
Events in quadrant A8,151,385557,222
Events in quadrant B4,197,160664,955
Events in quadrant C5,790,720563,221
Events in quadrant D7,841,075456,732

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0287581
B0169312
C0216651
D0278241

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A644798415.262913%
B64462103.257834%
C64475358.298433%
D6447150923.406235%

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 7582 6447 882 882 11.63% 13.68%
B 7581 6446 146 146 1.93% 2.26%
C 7582 6448 486 486 6.41% 7.54%
D 7581 6447 1487 1487 19.61% 23.06%

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 12 3 1898918 11658.89 655 641 162.8
A 10 253 1493914 9171.43 655 641 162.8
A 12 80 685668 4207.32 655 641 162.8
B 12 32 286553 2030.93 667 645 140.8
B 4 81 246272 1744.79 667 645 140.8
B 10 14 203775 1442.92 667 645 140.8
C 12 249 1150847 6551.24 635 629 175.6
C 15 254 556014 3163.28 635 629 175.6
C 13 3 340228 1934.24 635 629 175.6
D 8 176 1861305 10752.15 598 576 173.1
D 9 1 1332060 7693.93 598 576 173.1
D 15 170 579735 3346.65 598 576 173.1

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