ASTROSAT CZTI

Data Quality Report

Orbit 50996

Creation date: 2025-03-03T08:12:05.601378
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_50996cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50996cztM0_level2_quad_clean.evt
Size (bytes)914,826,240145,471,680
Size872.4 MB 138.7 MB
Events in quadrant A7,593,333923,997
Events in quadrant B8,203,509996,424
Events in quadrant C9,131,333906,722
Events in quadrant D8,114,287839,979

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298852
B0318002
C0347352
D0318102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106335405.078529%
B106337086.658516%
C106344924.626669%
D106346155.783336%

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 12033 10635 487 487 4.05% 4.58%
B 12033 10635 518 518 4.30% 4.87%
C 12034 10636 401 401 3.33% 3.77%
D 12034 10636 614 614 5.10% 5.77%

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 43 558903 2033.15 1080 1051 274.4
A 4 249 526775 1916.05 1080 1051 274.4
A 12 80 484457 1761.82 1080 1051 274.4
B 12 32 1277799 5574.09 1063 1024 229.1
B 0 172 796445 3472.62 1063 1024 229.1
B 4 81 526514 2294.16 1063 1024 229.1
C 12 247 2646657 9031.45 1052 1043 292.9
C 1 44 666635 2272.16 1052 1043 292.9
C 15 147 384806 1310.07 1052 1043 292.9
D 8 176 1102399 3827.61 1035 1001 287.8
D 2 153 574540 1993.18 1035 1001 287.8
D 15 108 489319 1697.02 1035 1001 287.8

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