ASTROSAT CZTI

Data Quality Report

Orbit 33437

Creation date: 2024-06-27T20:48:49.050938
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/AS1A11_046T04_9000004792_33437cztM0_level2.evt modeM0/AS1A11_046T04_9000004792_33437cztM0_level2_quad_clean.evt
Size (bytes)46,621,44011,511,360
Size44.5 MB 11.0 MB
Events in quadrant A275,28378,165
Events in quadrant B357,66778,674
Events in quadrant C325,28976,458
Events in quadrant D416,02471,609

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010741
B013821
C012511
D015811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50410.198413%
B504234.563492%
C504122.380952%
D504132.579365%

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 504 504 0 0 0.00% 0.00%
B 504 504 21 21 4.17% 4.17%
C 504 504 12 12 2.38% 2.38%
D 504 504 13 13 2.58% 2.58%

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 15 47 25772 1750.94 63 62 14.7
A 13 6 1920 126.54 63 62 14.7
A 10 83 1752 115.1 63 62 14.7
B 5 172 82964 5872.75 63 62 14.1
B 5 255 14681 1035.6 63 62 14.1
B 0 219 5417 379.35 63 62 14.1
C 0 10 51106 3173.46 62 62 16.1
C 15 214 26434 1639.57 62 62 16.1
C 12 251 2179 131.62 62 62 16.1
D 8 195 118344 7422.55 59 57 15.9
D 2 249 21447 1342.23 59 57 15.9
D 13 249 20507 1283.24 59 57 15.9

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