ASTROSAT CZTI

Data Quality Report

Orbit 44202

Creation date: 2024-06-27T23:00:28.738756
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/AS1A13_074T09_9000005968_44202cztM0_level2.fits modeM0/AS1A13_074T09_9000005968_44202cztM0_level2_quad_clean.evt
Size (bytes)570,352,320123,140,160
Size543.9 MB 117.4 MB
Events in quadrant A5,611,740822,255
Events in quadrant B4,337,312852,952
Events in quadrant C3,901,092832,308
Events in quadrant D6,668,406688,613

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222692
B0181842
C0170222
D0252452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76533814.978440%
B76532713.541095%
C76531041.358944%
D765490511.823883%

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 8868 7655 79 79 0.89% 1.03%
B 8868 7655 35 35 0.39% 0.46%
C 8868 7655 26 26 0.29% 0.34%
D 8869 7656 592 592 6.67% 7.73%

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 10 83 1766179 9427.02 894 875 187.3
A 15 223 319993 1704.14 894 875 187.3
A 15 174 30820 159.91 894 875 187.3
B 5 172 136056 763.38 896 867 177.1
B 0 200 130025 729.32 896 867 177.1
B 0 230 89875 502.61 896 867 177.1
C 14 254 174072 824.87 887 888 210.0
C 3 233 106914 505.0 887 888 210.0
C 4 254 97631 460.78 887 888 210.0
D 1 52 723076 3411.85 838 812 211.7
D 13 249 722114 3407.3 838 812 211.7
D 12 16 714442 3371.06 838 812 211.7

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