ASTROSAT CZTI

Data Quality Report

Orbit 23638

Creation date: 2024-06-27T18:57:04.644206
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/AS1A07_147T01_9000003490_23638cztM0_level2.evt modeM0/AS1A07_147T01_9000003490_23638cztM0_level2_quad_clean.evt
Size (bytes)482,221,44097,845,120
Size459.9 MB 93.3 MB
Events in quadrant A3,285,805635,345
Events in quadrant B3,458,650652,781
Events in quadrant C3,324,759618,237
Events in quadrant D4,092,396602,323

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136082
B0141492
C0137262
D0164312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6521350.536727%
B6520801.226994%
C6520801.226994%
D65201061.625767%

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 7821 6522 0 0 0.00% 0.00%
B 7820 6521 21 21 0.27% 0.32%
C 7820 6521 1 1 0.01% 0.02%
D 7820 6521 65 65 0.83% 1.00%

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 9682 51.81 853 838 170.7
A 0 226 7415 38.53 853 838 170.7
A 3 137 7124 36.82 853 838 170.7
B 3 64 69631 431.04 845 829 159.6
B 0 189 30380 185.14 845 829 159.6
B 4 216 21165 127.4 845 829 159.6
C 14 238 131471 694.07 810 817 188.2
C 0 10 24085 123.61 810 817 188.2
C 7 247 10793 53.0 810 817 188.2
D 1 52 406131 2043.02 819 796 198.4
D 9 85 384638 1934.68 819 796 198.4
D 12 233 180045 903.47 819 796 198.4

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