ASTROSAT CZTI

Data Quality Report

Orbit 46437

Creation date: 2024-06-27T23:23:12.771368
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_062T01_9000006208_46437cztM0_level2.fits modeM0/AS1A13_062T01_9000006208_46437cztM0_level2_quad_clean.evt
Size (bytes)528,572,160126,282,240
Size504.1 MB 120.4 MB
Events in quadrant A6,519,894842,548
Events in quadrant B4,378,120840,877
Events in quadrant C4,278,885826,106
Events in quadrant D3,783,458771,561

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240800
B0185240
C0181180
D0168400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78041391.781138%
B78043654.677089%
C78051842.357463%
D7805530.679052%

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 7804 7804 1 1 0.01% 0.01%
B 7804 7804 161 161 2.06% 2.06%
C 7805 7805 112 112 1.43% 1.43%
D 7805 7805 33 33 0.42% 0.42%

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 2906961 15424.42 900 881 188.4
A 3 7 107017 563.33 900 881 188.4
A 2 79 23541 120.27 900 881 188.4
B 0 189 844771 4777.69 883 855 176.6
B 0 245 25938 142.0 883 855 176.6
B 12 111 23731 129.51 883 855 176.6
C 14 254 638670 3039.44 888 894 209.8
C 3 233 155495 736.78 888 894 209.8
C 9 54 14644 65.53 888 894 209.8
D 13 249 124276 549.12 893 869 224.7
D 2 249 104277 460.13 893 869 224.7
D 1 52 103439 456.4 893 869 224.7

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