ASTROSAT CZTI

Data Quality Report

Orbit 25191

Creation date: 2024-06-27T19:14:54.447821
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/AS1A07_027T01_9000003690_25191cztM0_level2.evt modeM0/AS1A07_027T01_9000003690_25191cztM0_level2_quad_clean.evt
Size (bytes)538,920,000103,069,440
Size514.0 MB 98.3 MB
Events in quadrant A3,594,649659,787
Events in quadrant B3,673,494667,473
Events in quadrant C3,770,454635,231
Events in quadrant D4,762,958626,597

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157080
B0158440
C0158990
D0191900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76501041.359477%
B76501481.934641%
C76501982.588235%
D76511572.052019%

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 8310 7653 0 0 0.00% 0.00%
B 8310 7653 1 1 0.01% 0.01%
C 8310 7653 0 0 0.00% 0.00%
D 8311 7654 22 22 0.26% 0.29%

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 13 254 12344 60.75 932 911 188.2
A 3 137 8801 41.92 932 911 188.2
A 0 226 7740 36.28 932 911 188.2
B 12 111 22266 120.22 926 901 177.7
B 11 111 20190 108.54 926 901 177.7
B 14 111 18081 96.67 926 901 177.7
C 14 238 143276 680.0 891 894 209.4
C 7 247 124114 588.48 891 894 209.4
C 9 54 25508 117.55 891 894 209.4
D 12 235 647429 2970.37 902 874 217.7
D 8 195 460205 2110.23 902 874 217.7
D 2 244 153080 699.26 902 874 217.7

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