ASTROSAT CZTI

Data Quality Report

Orbit 25836

Creation date: 2024-06-27T19:21:57.142201
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/AS1A07_068T01_9000003756_25836cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25836cztM0_level2_quad_clean.evt
Size (bytes)455,558,40099,552,960
Size434.5 MB 94.9 MB
Events in quadrant A3,151,181676,775
Events in quadrant B3,181,642669,105
Events in quadrant C3,113,705621,564
Events in quadrant D3,942,493628,259

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131720
B0132210
C0130760
D0156430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5997791.317325%
B5998741.233745%
C59981041.733911%
D59971191.984325%

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 7262 5998 0 0 0.00% 0.00%
B 7263 5999 0 0 0.00% 0.00%
C 7263 5999 2 2 0.03% 0.03%
D 7262 5998 43 43 0.59% 0.72%

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 6 16 22082 131.94 811 797 161.3
A 13 254 8475 47.59 811 797 161.3
A 0 226 7049 38.75 811 797 161.3
B 0 219 39658 259.81 789 773 149.7
B 12 111 17117 109.2 789 773 149.7
B 11 111 15626 99.24 789 773 149.7
C 14 238 122420 700.94 746 751 173.6
C 3 233 60777 345.81 746 751 173.6
C 14 225 23358 130.24 746 751 173.6
D 1 3 405775 2207.08 768 750 183.5
D 1 52 377003 2050.3 768 750 183.5
D 12 233 101402 548.48 768 750 183.5

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