ASTROSAT CZTI

Data Quality Report

Orbit 09335

Creation date: 2024-06-27T15:44:37.979826
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/AS1G07_022T01_9000001322_09335cztM0_level2.evt modeM0/AS1G07_022T01_9000001322_09335cztM0_level2_quad_clean.evt
Size (bytes)451,258,56091,270,080
Size430.4 MB 87.0 MB
Events in quadrant A3,849,310595,635
Events in quadrant B3,097,515600,148
Events in quadrant C3,149,775579,157
Events in quadrant D3,162,907570,700

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015979569
B013446416
C013782314
D013816338

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01264
B01260
C01264
D01264

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59431111.867744%
B5971721.205828%
C60051071.781848%
D6005841.398834%

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 7448 6114 52 52 0.70% 0.85%
B 7449 6129 7 7 0.09% 0.11%
C 7449 6129 47 47 0.63% 0.77%
D 7449 6132 40 40 0.54% 0.65%

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 5 705795 4804.3 730 717 146.8
A 13 251 110130 745.52 730 717 146.8
A 5 16 68943 464.88 730 717 146.8
B 0 246 56191 394.04 737 718 140.8
B 0 219 50395 352.87 737 718 140.8
B 0 214 50357 352.6 737 718 140.8
C 4 254 408298 2536.24 698 703 160.7
C 13 61 5305 28.64 698 703 160.7
C 8 222 4186 21.67 698 703 160.7
D 12 233 148194 791.91 699 680 186.3
D 1 52 99027 527.96 699 680 186.3
D 7 71 75024 399.11 699 680 186.3

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