ASTROSAT CZTI

Data Quality Report

Orbit 51919

Creation date: 2025-05-04T11:44:16.180139
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_011T05_9000006466_51919cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51919cztM0_level2_quad_clean.evt
Size (bytes)1,070,622,72070,274,880
Size1021.0 MB 67.0 MB
Events in quadrant A11,193,647381,433
Events in quadrant B9,526,819449,781
Events in quadrant C6,090,465519,651
Events in quadrant D12,296,241302,702

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0378881
B0331161
C0231721
D0412671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6795279841.177336%
B6795257037.821928%
C6795107615.835173%
D6796339850.000000%

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 7300 6795 2615 2615 35.82% 38.48%
B 7300 6796 1909 1909 26.15% 28.09%
C 7300 6795 933 933 12.78% 13.73%
D 7301 6796 3221 3221 44.12% 47.40%

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 8 248 3963796 30249.55 518 505 131.0
A 7 64 2991387 22827.71 518 505 131.0
A 12 3 812198 6195.19 518 505 131.0
B 4 206 6613260 53922.72 570 552 122.6
B 1 238 161045 1308.73 570 552 122.6
B 8 234 121273 984.41 570 552 122.6
C 15 158 1968510 11244.3 628 624 175.0
C 15 224 444373 2535.54 628 624 175.0
C 4 5 427322 2438.11 628 624 175.0
D 15 94 7331003 54101.48 471 452 135.5
D 3 12 683704 5042.59 471 452 135.5
D 12 17 586096 4322.21 471 452 135.5

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