ASTROSAT CZTI

Data Quality Report

Orbit 03935

Creation date: 2024-06-27T14:35:25.850158
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/AS1G05_172T01_9000000502_03935cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03935cztM0_level2_quad_clean.evt
Size (bytes)552,934,08062,686,080
Size527.3 MB 59.8 MB
Events in quadrant A3,966,710370,455
Events in quadrant B3,882,244379,268
Events in quadrant C2,839,380375,542
Events in quadrant D5,628,945330,987

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158863
B0155292
C0128722
D0212232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63191021.614179%
B6319530.838740%
C631990.142428%
D631964510.207311%

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 7569 6320 51 51 0.67% 0.81%
B 7569 6320 13 13 0.17% 0.21%
C 7569 6320 0 0 0.00% 0.00%
D 7569 6320 598 598 7.90% 9.46%

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 829812 5466.9 746 730 151.7
A 0 118 188401 1237.49 746 730 151.7
A 0 226 25972 166.44 746 730 151.7
B 3 0 687577 4748.61 759 742 144.6
B 4 81 66694 455.98 759 742 144.6
B 15 204 65774 449.62 759 742 144.6
C 7 222 15708 89.95 720 725 166.6
C 10 65 8163 44.65 720 725 166.6
C 13 61 6188 32.8 720 725 166.6
D 9 82 2552627 15203.32 689 670 167.9
D 2 232 270038 1604.76 689 670 167.9
D 13 223 77725 459.06 689 670 167.9

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
Veto Counter