ASTROSAT CZTI

Data Quality Report

Orbit 41970

Creation date: 2024-06-27T22:35:06.760588
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/AS1A12_025T15_9000005726_41970cztM0_level2.fits modeM0/AS1A12_025T15_9000005726_41970cztM0_level2_quad_clean.evt
Size (bytes)937,851,840270,596,160
Size894.4 MB 258.1 MB
Events in quadrant A8,958,1331,853,620
Events in quadrant B7,971,8191,910,660
Events in quadrant C7,703,8111,776,861
Events in quadrant D8,892,6341,592,907

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0354653
B0333713
C0315283
D0367793

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15361420.273420%
B15361650.423150%
C15361280.182280%
D153614432.883927%

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 21700 15364 19 19 0.09% 0.12%
B 21700 15364 41 41 0.19% 0.27%
C 21700 15364 22 22 0.10% 0.14%
D 21700 15364 399 399 1.84% 2.60%

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 10 83 1356153 3721.24 1802 1767 364.0
A 2 79 307993 841.37 1802 1767 364.0
A 14 250 288995 789.17 1802 1767 364.0
B 0 190 725287 2145.61 1778 1734 337.2
B 5 255 213002 626.49 1778 1734 337.2
B 0 186 43378 123.49 1778 1734 337.2
C 15 214 661192 1653.3 1730 1746 398.9
C 8 79 148537 368.02 1730 1746 398.9
C 15 111 82835 203.3 1730 1746 398.9
D 13 249 1271957 3050.24 1721 1674 416.5
D 10 199 488024 1167.84 1721 1674 416.5
D 2 249 187085 445.21 1721 1674 416.5

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