ASTROSAT CZTI

Data Quality Report

Orbit 31775

Creation date: 2024-06-27T20:32:34.470946
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/AS1A10_109T01_9000004638_31775cztM0_level2.evt modeM0/AS1A10_109T01_9000004638_31775cztM0_level2_quad_clean.evt
Size (bytes)579,548,160108,570,240
Size552.7 MB 103.5 MB
Events in quadrant A3,766,457725,613
Events in quadrant B5,196,664726,687
Events in quadrant C3,726,223695,655
Events in quadrant D4,416,021680,301

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155063
B0200883
C0151673
D0176173

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65941482.244465%
B65941472.229299%
C65942533.836821%
D65941141.728844%

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 7639 6596 16 16 0.21% 0.24%
B 7639 6596 0 0 0.00% 0.00%
C 7639 6596 31 31 0.41% 0.47%
D 7639 6596 39 39 0.51% 0.59%

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 0 13 346532 1963.83 878 864 176.0
A 14 238 34854 193.11 878 864 176.0
A 13 254 11156 58.47 878 864 176.0
B 6 159 1774154 10840.53 866 847 163.6
B 12 111 19593 114.6 866 847 163.6
B 11 111 18085 105.38 866 847 163.6
C 0 10 208926 1047.76 847 856 198.6
C 14 238 140042 700.88 847 856 198.6
C 4 175 26126 127.25 847 856 198.6
D 8 195 994405 4882.3 858 838 203.5
D 12 218 120530 588.16 858 838 203.5
D 2 250 30707 146.77 858 838 203.5

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