ASTROSAT CZTI

Data Quality Report

Orbit 23276

Creation date: 2024-06-27T18:52:13.537090
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/AS1C05_005T01_9000003440_23276cztM0_level2.evt modeM0/AS1C05_005T01_9000003440_23276cztM0_level2_quad_clean.evt
Size (bytes)475,626,240102,893,760
Size453.6 MB 98.1 MB
Events in quadrant A3,199,477679,787
Events in quadrant B3,335,950694,713
Events in quadrant C3,324,622665,336
Events in quadrant D4,128,685648,868

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134462
B0138272
C0137862
D0165302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6119781.274718%
B61191151.879392%
C61191191.944762%
D61191963.203138%

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 7439 6120 0 0 0.00% 0.00%
B 7439 6120 14 14 0.19% 0.23%
C 7439 6119 0 0 0.00% 0.00%
D 7439 6120 92 92 1.24% 1.50%

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 13 254 10615 60.04 829 815 163.2
A 0 226 7206 39.15 829 815 163.2
A 3 137 6624 35.59 829 815 163.2
B 4 200 76938 494.59 830 811 153.9
B 12 111 17393 107.73 830 811 153.9
B 11 111 15160 93.22 830 811 153.9
C 14 238 128709 693.84 808 817 184.3
C 8 208 13219 67.28 808 817 184.3
C 3 233 13183 67.09 808 817 184.3
D 7 238 298552 1526.37 813 792 195.1
D 7 223 228667 1168.13 813 792 195.1
D 1 239 196477 1003.12 813 792 195.1

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