ASTROSAT CZTI

Data Quality Report

Orbit 24939

Creation date: 2024-06-27T19:11:41.377143
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/AS1T03_200T01_9000003654_24939cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24939cztM0_level2_quad_clean.evt
Size (bytes)464,192,640140,094,720
Size442.7 MB 133.6 MB
Events in quadrant A3,304,540957,709
Events in quadrant B3,417,104996,008
Events in quadrant C3,376,137939,300
Events in quadrant D3,524,091902,471

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138442
B0142352
C0139832
D0147822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6418901.402306%
B6418450.701153%
C6418701.090682%
D6418390.607666%

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 7783 6419 53 53 0.68% 0.83%
B 7783 6419 9 9 0.12% 0.14%
C 7783 6419 0 0 0.00% 0.00%
D 7783 6419 29 29 0.37% 0.45%

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 4 2 150133 932.6 811 798 160.1
A 6 16 19658 117.78 811 798 160.1
A 13 254 9414 53.81 811 798 160.1
B 3 64 74916 493.18 824 808 150.3
B 0 230 46396 303.39 824 808 150.3
B 7 202 21439 137.3 824 808 150.3
C 7 247 162799 889.71 790 796 182.1
C 14 238 131076 715.49 790 796 182.1
C 13 61 5480 25.72 790 796 182.1
D 1 52 184523 973.6 786 763 188.7
D 8 195 141671 746.56 786 763 188.7
D 1 239 123260 649.02 786 763 188.7

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