ASTROSAT CZTI

Data Quality Report

Orbit 14637

Creation date: 2024-06-27T16:57:48.998292
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/AS1A04_043T01_9000002156_14637cztM0_level2.evt modeM0/AS1A04_043T01_9000002156_14637cztM0_level2_quad_clean.evt
Size (bytes)567,043,200107,395,200
Size540.8 MB 102.4 MB
Events in quadrant A3,690,047696,692
Events in quadrant B3,569,495694,966
Events in quadrant C5,793,466676,202
Events in quadrant D3,628,280679,360

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159502
B0155341
C0225681
D0160121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7262280.385569%
B7262490.674745%
C7262881.211787%
D7262600.826219%

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 7708 7264 0 0 0.00% 0.00%
B 7708 7264 4 4 0.05% 0.06%
C 7708 7264 7 7 0.09% 0.10%
D 7708 7264 44 44 0.57% 0.61%

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 1 162 127642 732.37 851 832 173.1
A 0 23 74927 427.92 851 832 173.1
A 1 178 54879 312.14 851 832 173.1
B 0 189 72645 441.5 853 830 162.7
B 0 230 33713 202.15 853 830 162.7
B 0 214 23557 139.72 853 830 162.7
C 3 233 2545097 13270.76 826 829 191.7
C 3 234 10532 50.61 826 829 191.7
C 0 207 10244 49.11 826 829 191.7
D 10 199 213041 984.25 827 807 215.6
D 10 70 92576 425.58 827 807 215.6
D 2 120 39562 179.73 827 807 215.6

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