ASTROSAT CZTI

Data Quality Report

Orbit 07873

Creation date: 2024-06-27T15:25:06.119406
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/AS1A02_071T01_9000001078_07873cztM0_level2.evt modeM0/AS1A02_071T01_9000001078_07873cztM0_level2_quad_clean.evt
Size (bytes)469,857,600102,830,400
Size448.1 MB 98.1 MB
Events in quadrant A3,314,230668,035
Events in quadrant B3,426,819693,299
Events in quadrant C3,967,529675,489
Events in quadrant D3,094,360638,914

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137303
B0141442
C0160222
D0134812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6283440.700302%
B62831562.482890%
C6283771.225529%
D6284400.636537%

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 7553 6284 2 2 0.03% 0.03%
B 7553 6284 51 51 0.68% 0.81%
C 7553 6284 11 11 0.15% 0.18%
D 7554 6285 29 29 0.38% 0.46%

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 15 239 332312 2128.87 768 752 155.7
A 3 1 8669 50.83 768 752 155.7
A 13 14 8010 46.6 768 752 155.7
B 4 239 240262 1637.39 783 766 146.3
B 4 97 73319 496.03 783 766 146.3
B 4 81 29757 198.21 783 766 146.3
C 1 16 977185 5548.86 763 768 176.0
C 13 61 5865 28.96 763 768 176.0
C 14 67 5859 28.93 763 768 176.0
D 2 14 94390 515.54 749 727 181.7
D 1 52 68831 374.86 749 727 181.7
D 13 104 23120 123.25 749 727 181.7

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