ASTROSAT CZTI

Data Quality Report

Orbit 27974

Creation date: 2024-06-27T19:46:38.616563
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_065T03_9000004040_27974cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27974cztM0_level2_quad_clean.evt
Size (bytes)496,146,24089,424,000
Size473.2 MB 85.3 MB
Events in quadrant A3,286,227578,878
Events in quadrant B3,416,873569,674
Events in quadrant C3,362,751538,431
Events in quadrant D4,494,648543,294

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139710
B0144390
C0141070
D0178570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6860330.481050%
B6860540.787172%
C6860921.341108%
D6860871.268222%

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 8390 6861 1 1 0.01% 0.01%
B 8390 6860 1 1 0.01% 0.01%
C 8390 6860 12 12 0.14% 0.17%
D 8390 6860 35 35 0.42% 0.51%

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 8 192 11285 61.0 847 829 171.4
A 13 254 10771 58.01 847 829 171.4
A 6 16 9151 48.55 847 829 171.4
B 10 245 108767 663.63 837 814 162.7
B 12 111 20485 120.93 837 814 162.7
B 11 111 18922 111.32 837 814 162.7
C 14 238 129057 667.82 813 818 192.0
C 2 16 51760 265.29 813 818 192.0
C 3 233 16924 83.87 813 818 192.0
D 8 195 792147 4070.57 820 799 194.4
D 1 52 400211 2054.51 820 799 194.4
D 7 80 182384 934.04 820 799 194.4

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