ASTROSAT CZTI

Data Quality Report

Orbit 25259

Creation date: 2024-06-27T19:15:37.395776
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/AS1A09_027T01_9000003694_25259cztM0_level2.evt modeM0/AS1A09_027T01_9000003694_25259cztM0_level2_quad_clean.evt
Size (bytes)661,190,40099,639,360
Size630.6 MB 95.0 MB
Events in quadrant A3,129,689692,434
Events in quadrant B3,480,011693,893
Events in quadrant C3,584,257667,099
Events in quadrant D9,440,029559,564

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129420
B0139970
C0144850
D0320210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5777540.934741%
B57781312.267220%
C57781452.509519%
D5777171129.617449%

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 7102 5778 2 2 0.03% 0.03%
B 7103 5779 46 46 0.65% 0.80%
C 7103 5779 14 14 0.20% 0.24%
D 7102 5778 1619 1619 22.80% 28.02%

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 231469 1560.9 744 728 147.8
A 3 1 22404 146.63 744 728 147.8
A 13 254 9159 57.03 744 728 147.8
B 3 64 450147 3329.34 734 717 135.0
B 15 33 70451 516.58 734 717 135.0
B 0 190 37676 273.79 734 717 135.0
C 0 239 391453 2354.51 723 729 165.9
C 3 233 203568 1222.31 723 729 165.9
C 14 238 116040 694.87 723 729 165.9
D 1 239 3393562 21204.44 665 648 160.0
D 9 35 1584063 9895.75 665 648 160.0
D 8 195 1170131 7308.83 665 648 160.0

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