ASTROSAT CZTI

Data Quality Report

Orbit 20841

Creation date: 2024-06-27T18:20:14.230543
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/AS1C04_001T01_9000003074_20841cztM0_level2.evt modeM0/AS1C04_001T01_9000003074_20841cztM0_level2_quad_clean.evt
Size (bytes)595,128,96093,991,680
Size567.6 MB 89.6 MB
Events in quadrant A3,213,168647,870
Events in quadrant B3,403,840644,919
Events in quadrant C3,125,646615,659
Events in quadrant D7,844,541488,735

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135982
B0141462
C0133932
D0274592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6434370.575070%
B6434701.087970%
C6434620.963631%
D6434196030.463164%

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 7649 6434 0 0 0.00% 0.00%
B 7649 6434 17 17 0.22% 0.26%
C 7649 6434 0 0 0.00% 0.00%
D 7649 6434 1871 1871 24.46% 29.08%

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 2 79 41374 249.01 816 801 162.9
A 6 16 15473 90.05 816 801 162.9
A 0 226 7061 38.42 816 801 162.9
B 0 189 55222 361.68 808 788 150.5
B 5 172 46410 303.13 808 788 150.5
B 4 142 25533 164.41 808 788 150.5
C 14 238 123761 697.37 769 773 176.4
C 13 61 5391 26.19 769 773 176.4
C 7 247 2720 11.04 769 773 176.4
D 1 52 5158234 34866.11 618 600 147.9
D 13 153 270000 1821.17 618 600 147.9
D 1 20 48214 321.88 618 600 147.9

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