ASTROSAT CZTI

Data Quality Report

Orbit 28157

Creation date: 2024-06-27T19:48:40.752164
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_045T04_9000004066_28157cztM0_level2.evt modeM0/AS1A10_045T04_9000004066_28157cztM0_level2_quad_clean.evt
Size (bytes)542,306,88086,077,440
Size517.2 MB 82.1 MB
Events in quadrant A3,226,595547,539
Events in quadrant B3,316,022560,611
Events in quadrant C3,519,089531,541
Events in quadrant D5,902,201494,567

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138750
B0140340
C0145600
D0219750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67801131.666667%
B67801251.843658%
C67801742.566372%
D677988213.010769%

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 7275 6780 0 0 0.00% 0.00%
B 7275 6780 1 1 0.01% 0.01%
C 7275 6780 12 12 0.16% 0.18%
D 7273 6778 733 733 10.08% 10.81%

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 13 254 10838 59.03 836 817 169.8
A 3 137 8068 42.71 836 817 169.8
A 0 226 7149 37.3 836 817 169.8
B 12 111 20341 121.3 827 805 161.1
B 10 245 19305 114.87 827 805 161.1
B 11 111 18355 108.97 827 805 161.1
C 3 233 166633 875.59 802 807 189.4
C 14 238 129131 677.57 802 807 189.4
C 2 16 96872 507.24 802 807 189.4
D 13 104 1484535 8056.66 765 745 184.2
D 1 52 521509 2827.64 765 745 184.2
D 8 195 365806 1982.2 765 745 184.2

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