ASTROSAT CZTI

Data Quality Report

Orbit 24246

Creation date: 2024-06-27T19:03:55.903856
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_118T01_9000003586_24246cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24246cztM0_level2_quad_clean.evt
Size (bytes)481,728,960101,603,520
Size459.4 MB 96.9 MB
Events in quadrant A3,372,101660,243
Events in quadrant B3,542,662687,784
Events in quadrant C3,656,746655,961
Events in quadrant D3,595,584638,954

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137522
B0144032
C0145982
D0147112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6222741.189328%
B62221141.832208%
C62221462.346512%
D6222130.208936%

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 7572 6223 44 44 0.58% 0.71%
B 7572 6223 20 20 0.26% 0.32%
C 7572 6223 11 11 0.15% 0.18%
D 7572 6223 2 2 0.03% 0.03%

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 6 16 182194 1100.91 827 813 164.8
A 13 254 8800 48.48 827 813 164.8
A 0 226 7135 38.37 827 813 164.8
B 12 17 103502 663.59 832 813 154.7
B 15 33 89755 574.76 832 813 154.7
B 0 245 56867 362.23 832 813 154.7
C 7 247 355053 1896.3 805 814 186.8
C 14 238 128871 685.51 805 814 186.8
C 2 16 27612 143.45 805 814 186.8
D 8 195 486987 2438.36 818 795 199.4
D 2 234 24151 117.13 818 795 199.4
D 12 233 12273 57.56 818 795 199.4

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