ASTROSAT CZTI

Data Quality Report

Orbit 13721

Creation date: 2024-06-27T16:44:55.622738
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/AS1G08_036T01_9000002034_13721cztM0_level2.evt modeM0/AS1G08_036T01_9000002034_13721cztM0_level2_quad_clean.evt
Size (bytes)471,516,480105,384,960
Size449.7 MB 100.5 MB
Events in quadrant A3,304,127695,186
Events in quadrant B3,600,830721,271
Events in quadrant C3,427,760679,736
Events in quadrant D3,503,965640,194

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137063
B0146242
C0139782
D0144302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6531190.290920%
B6531340.520594%
C6531200.306232%
D6531250.382790%

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 7877 6533 0 0 0.00% 0.00%
B 7877 6533 2 2 0.03% 0.03%
C 7877 6533 2 2 0.03% 0.03%
D 7877 6533 12 12 0.15% 0.18%

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 0 226 7504 38.87 859 841 171.4
A 12 194 6387 32.35 859 841 171.4
A 3 137 4822 23.22 859 841 171.4
B 10 244 96511 600.54 865 847 159.3
B 8 250 53189 328.58 865 847 159.3
B 0 219 22933 138.65 865 847 159.3
C 3 233 116064 591.96 846 852 194.6
C 4 254 11624 55.35 846 852 194.6
C 13 61 5916 26.02 846 852 194.6
D 8 195 125164 584.76 828 812 212.7
D 5 222 102933 480.22 828 812 212.7
D 1 52 48390 223.73 828 812 212.7

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