ASTROSAT CZTI

Data Quality Report

Orbit 19897

Creation date: 2024-06-27T18:08:27.554883
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_118T01_9000002962_19897cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19897cztM0_level2_quad_clean.evt
Size (bytes)512,406,72070,047,360
Size488.7 MB 66.8 MB
Events in quadrant A4,646,861422,076
Events in quadrant B3,406,255425,337
Events in quadrant C3,290,617404,464
Events in quadrant D3,716,248398,480

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180282
B0142762
C0139402
D0153312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67544666.899615%
B67541051.554634%
C67541021.510216%
D67541382.043234%

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 7669 6754 346 346 4.51% 5.12%
B 7669 6754 3 3 0.04% 0.04%
C 7669 6754 0 0 0.00% 0.00%
D 7669 6754 60 60 0.78% 0.89%

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 5 16 1447173 8600.44 832 814 168.2
A 0 226 7108 37.43 832 814 168.2
A 3 137 6802 35.61 832 814 168.2
B 7 220 69007 419.08 842 820 162.7
B 12 111 19737 116.27 842 820 162.7
B 11 111 18069 106.01 842 820 162.7
C 14 238 127779 664.0 810 814 191.2
C 13 61 5541 24.72 810 814 191.2
C 7 220 3286 12.93 810 814 191.2
D 12 218 173938 865.59 826 803 200.0
D 1 52 171174 851.77 826 803 200.0
D 1 20 122227 607.06 826 803 200.0

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