ASTROSAT CZTI

Data Quality Report

Orbit 21839

Creation date: 2024-06-27T18:32:51.995181
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_004T01_9000003230_21839cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21839cztM0_level2_quad_clean.evt
Size (bytes)522,184,32092,649,600
Size498.0 MB 88.4 MB
Events in quadrant A3,406,504609,196
Events in quadrant B3,481,253615,546
Events in quadrant C3,158,492587,764
Events in quadrant D5,329,139541,711

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144072
B0146732
C0136282
D0202572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6468911.406926%
B64691181.824084%
C6469831.283042%
D64694957.651878%

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 7573 6468 16 16 0.21% 0.25%
B 7574 6469 30 30 0.40% 0.46%
C 7574 6469 0 0 0.00% 0.00%
D 7574 6469 338 338 4.46% 5.22%

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 14 235 199748 1203.92 820 802 165.2
A 5 16 32864 194.02 820 802 165.2
A 13 254 13066 74.22 820 802 165.2
B 3 64 148345 933.17 818 797 158.1
B 0 245 27312 167.69 818 797 158.1
B 0 189 22897 139.77 818 797 158.1
C 14 238 123147 674.59 777 781 181.4
C 13 61 5704 27.14 777 781 181.4
C 4 175 4092 18.25 777 781 181.4
D 1 52 2101991 10443.87 758 741 201.2
D 14 35 163155 807.25 758 741 201.2
D 5 32 52934 259.42 758 741 201.2

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