ASTROSAT CZTI

Data Quality Report

Orbit 45521

Creation date: 2024-06-27T23:13:06.741588
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_031T01_9000006102_45521cztM0_level2.fits modeM0/AS1A13_031T01_9000006102_45521cztM0_level2_quad_clean.evt
Size (bytes)488,825,280115,041,600
Size466.2 MB 109.7 MB
Events in quadrant A5,974,083764,820
Events in quadrant B3,795,832775,950
Events in quadrant C3,095,602767,091
Events in quadrant D4,676,423679,828

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229481
B0163021
C0145471
D0190331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71191862.612727%
B71192733.834808%
C7119170.238798%
D71202884.044944%

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 7524 7122 23 23 0.31% 0.32%
B 7524 7122 142 142 1.89% 1.99%
C 7524 7122 0 0 0.00% 0.00%
D 7525 7123 257 257 3.42% 3.61%

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 2741636 16604.14 792 776 165.1
A 7 3 117446 706.79 792 776 165.1
A 13 248 34905 206.75 792 776 165.1
B 0 189 312932 2006.41 785 760 155.6
B 15 201 226813 1452.9 785 760 155.6
B 5 172 73322 466.38 785 760 155.6
C 2 14 8036 38.76 790 793 186.8
C 13 61 5285 24.04 790 793 186.8
C 0 239 3593 14.99 790 793 186.8
D 13 249 756877 3866.0 773 747 195.6
D 5 222 307821 1570.03 773 747 195.6
D 2 249 146970 747.62 773 747 195.6

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