ASTROSAT CZTI

Data Quality Report

Orbit 28211

Creation date: 2024-06-27T19:49:13.144488
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/AS1A10_045T09_9000004072_28211cztM0_level2.evt modeM0/AS1A10_045T09_9000004072_28211cztM0_level2_quad_clean.evt
Size (bytes)511,522,560114,223,680
Size487.8 MB 108.9 MB
Events in quadrant A3,400,084764,612
Events in quadrant B3,477,453789,366
Events in quadrant C3,481,874742,303
Events in quadrant D4,687,604706,086

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142010
B0144460
C0145620
D0184040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6560590.899390%
B6559671.021497%
C6559831.265437%
D65591131.722824%

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 7880 6561 1 1 0.01% 0.02%
B 7879 6560 3 3 0.04% 0.05%
C 7879 6560 0 0 0.00% 0.00%
D 7879 6560 59 59 0.75% 0.90%

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 12 96 10054 52.83 877 862 174.0
A 8 192 9246 48.19 877 862 174.0
A 13 254 8650 44.76 877 862 174.0
B 12 111 20054 116.7 877 858 164.5
B 0 230 19070 110.71 877 858 164.5
B 11 111 18109 104.87 877 858 164.5
C 14 238 137520 704.32 839 844 194.1
C 3 233 69442 353.5 839 844 194.1
C 13 61 5824 25.66 839 844 194.1
D 1 52 1102536 5593.26 828 807 197.0
D 8 195 242102 1225.01 828 807 197.0
D 2 250 89739 451.49 828 807 197.0

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