ASTROSAT CZTI

Data Quality Report

Orbit 15993

Creation date: 2024-06-27T17:16:15.576276
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/AS1T02_090T01_9000002360_15993cztM0_level2.evt modeM0/AS1T02_090T01_9000002360_15993cztM0_level2_quad_clean.evt
Size (bytes)521,288,64069,635,520
Size497.1 MB 66.4 MB
Events in quadrant A3,482,952427,124
Events in quadrant B4,315,275424,345
Events in quadrant C3,987,070409,800
Events in quadrant D3,574,085406,584

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143133
B0171792
C0159852
D0148732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6306991.569933%
B63062063.266730%
C63062013.187441%
D6306941.490644%

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 7637 6307 2 2 0.03% 0.03%
B 7637 6307 75 75 0.98% 1.19%
C 7637 6307 47 47 0.62% 0.75%
D 7637 6307 6 6 0.08% 0.10%

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 15 157 13038 67.68 893 879 179.7
A 15 239 12497 64.67 893 879 179.7
A 9 143 9480 47.88 893 879 179.7
B 10 245 266077 1624.41 882 865 163.3
B 7 220 245312 1497.23 882 865 163.3
B 4 142 145099 883.43 882 865 163.3
C 9 236 270254 1384.38 851 862 194.6
C 0 207 181688 929.25 851 862 194.6
C 14 238 133120 679.66 851 862 194.6
D 2 152 79360 366.88 875 852 214.0
D 12 110 74246 342.99 875 852 214.0
D 2 234 29236 132.64 875 852 214.0

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