ASTROSAT CZTI

Data Quality Report

Orbit 12638

Creation date: 2024-06-27T16:30:21.332297
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/AS1G08_071T01_9000001874_12638cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12638cztM0_level2_quad_clean.evt
Size (bytes)568,189,44091,310,400
Size541.9 MB 87.1 MB
Events in quadrant A3,380,194574,005
Events in quadrant B4,356,836584,705
Events in quadrant C3,369,325589,089
Events in quadrant D5,620,306523,036

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149273
B0177962
C0149022
D0216832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7103310.436435%
B71032433.421090%
C7103440.619457%
D71034616.490215%

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 9469 7105 0 0 0.00% 0.00%
B 9469 7105 94 94 0.99% 1.32%
C 9469 7105 9 9 0.10% 0.13%
D 9469 7105 398 398 4.20% 5.60%

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 8 15 81497 467.41 852 832 172.6
A 14 239 8906 46.78 852 832 172.6
A 0 226 7527 38.79 852 832 172.6
B 4 239 614452 3776.19 855 835 162.5
B 3 64 146007 893.39 855 835 162.5
B 4 81 106869 652.53 855 835 162.5
C 15 208 62650 318.78 839 842 193.9
C 7 238 25629 127.84 839 842 193.9
C 7 239 8204 37.97 839 842 193.9
D 10 157 1371586 7098.13 804 781 193.1
D 10 199 1079832 5587.41 804 781 193.1
D 13 249 30286 152.78 804 781 193.1

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