ASTROSAT CZTI

Data Quality Report

Orbit 11696

Creation date: 2024-06-27T16:17:02.526529
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/AS1A04_227T01_9000001724_11696cztM0_level2.evt modeM0/AS1A04_227T01_9000001724_11696cztM0_level2_quad_clean.evt
Size (bytes)555,698,88068,307,840
Size530.0 MB 65.1 MB
Events in quadrant A4,282,613406,742
Events in quadrant B4,381,670404,219
Events in quadrant C3,144,107416,825
Events in quadrant D4,588,842395,501

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168893
B0168982
C0132982
D0176742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63732353.687431%
B63733485.460537%
C6373500.784560%
D63734987.814216%

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 7609 6376 48 48 0.63% 0.75%
B 7609 6376 145 145 1.91% 2.27%
C 7609 6376 0 0 0.00% 0.00%
D 7609 6376 442 442 5.81% 6.93%

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 609558 3647.78 826 812 166.9
A 1 162 178500 1064.76 826 812 166.9
A 1 178 94668 562.41 826 812 166.9
B 3 64 674586 4293.48 825 808 156.9
B 4 239 395679 2516.22 825 808 156.9
B 15 204 58879 370.04 825 808 156.9
C 13 61 5971 27.81 806 812 185.5
C 3 202 1947 6.12 806 812 185.5
C 8 222 1848 5.58 806 812 185.5
D 13 152 948664 5013.49 784 764 189.1
D 13 122 188041 990.52 784 764 189.1
D 1 52 165542 871.52 784 764 189.1

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