ASTROSAT CZTI

Data Quality Report

Orbit 10256

Creation date: 2024-06-27T15:56:56.732750
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/AS1A03_052T01_9000001480_10256cztM0_level2.evt modeM0/AS1A03_052T01_9000001480_10256cztM0_level2_quad_clean.evt
Size (bytes)552,934,08087,759,360
Size527.3 MB 83.7 MB
Events in quadrant A3,428,430543,094
Events in quadrant B4,140,002545,752
Events in quadrant C3,357,590537,365
Events in quadrant D5,312,358511,088

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01529518
B01717541
C01524317
D02062330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7477470.628594%
B74681211.620246%
C7477280.374482%
D74763144.200107%

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 9021 7486 5 5 0.06% 0.07%
B 9021 7486 46 46 0.51% 0.61%
C 9021 7487 1 1 0.01% 0.01%
D 9021 7487 275 275 3.05% 3.67%

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 15 174 22115 118.5 879 859 179.4
A 8 15 17257 91.42 879 859 179.4
A 0 226 8097 40.35 879 859 179.4
B 10 245 390311 2275.78 882 859 171.1
B 4 239 199568 1161.17 882 859 171.1
B 4 81 43531 249.36 882 859 171.1
C 14 67 30028 147.0 850 855 198.4
C 14 234 14072 66.6 850 855 198.4
C 13 61 6504 28.47 850 855 198.4
D 1 52 958406 4800.12 828 804 199.5
D 8 195 604054 3023.88 828 804 199.5
D 13 105 159759 796.78 828 804 199.5

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