ASTROSAT CZTI

Data Quality Report

Orbit 12604

Creation date: 2024-06-27T16:29:52.005828
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_12604cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12604cztM0_level2_quad_clean.evt
Size (bytes)521,994,24074,672,640
Size497.8 MB 71.2 MB
Events in quadrant A3,077,065465,514
Events in quadrant B4,392,854451,267
Events in quadrant C3,048,370469,411
Events in quadrant D4,863,015435,242

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134463
B0173462
C0133382
D0188612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6304620.983503%
B63045278.359772%
C6304520.824873%
D63044316.836929%

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 7470 6305 0 0 0.00% 0.00%
B 7470 6305 356 356 4.77% 5.65%
C 7470 6305 0 0 0.00% 0.00%
D 7470 6305 253 253 3.39% 4.01%

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 3 1 22318 135.42 788 770 159.1
A 12 189 15419 92.06 788 770 159.1
A 0 226 6986 39.06 788 770 159.1
B 4 239 1293110 8959.0 761 746 144.3
B 0 197 42896 292.19 761 746 144.3
B 3 209 39397 267.94 761 746 144.3
C 15 208 21657 117.14 775 779 178.2
C 14 234 7457 37.47 775 779 178.2
C 13 61 5650 27.33 775 779 178.2
D 1 52 1879400 10325.0 752 731 182.0
D 1 255 43907 237.29 752 731 182.0
D 13 104 32939 177.01 752 731 182.0

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