ASTROSAT CZTI

Data Quality Report

Orbit 37121

Creation date: 2024-06-27T21:35:50.264505
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/AS1A09_138T04_9000005282_37121cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37121cztM0_level2_quad_clean.evt
Size (bytes)499,996,80084,916,800
Size476.8 MB 81.0 MB
Events in quadrant A3,330,525546,745
Events in quadrant B4,006,946554,671
Events in quadrant C3,215,835547,313
Events in quadrant D4,183,561505,141

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137533
B0159642
C0131562
D0164982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59721742.913597%
B59724437.417950%
C5972711.188881%
D59724237.083054%

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 7254 5973 106 106 1.46% 1.77%
B 7254 5973 349 349 4.81% 5.84%
C 7254 5973 63 63 0.87% 1.05%
D 7254 5973 416 416 5.73% 6.96%

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 15 237 343003 2513.37 666 654 136.2
A 10 83 274377 2009.55 666 654 136.2
A 9 143 87032 634.15 666 654 136.2
B 5 200 704907 5579.31 654 636 126.2
B 5 172 411154 3252.17 654 636 126.2
B 5 184 230061 1817.53 654 636 126.2
C 14 254 306166 1980.36 659 664 154.3
C 15 214 256011 1655.24 659 664 154.3
C 0 10 67696 434.52 659 664 154.3
D 12 17 861544 5476.1 640 622 157.2
D 13 171 389510 2473.61 640 622 157.2
D 13 249 223970 1420.66 640 622 157.2

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