ASTROSAT CZTI

Data Quality Report

Orbit 26792

Creation date: 2024-06-27T19:32:59.823696
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/AS1A09_079T01_9000003864_26792cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26792cztM0_level2_quad_clean.evt
Size (bytes)658,630,080121,320,000
Size628.1 MB 115.7 MB
Events in quadrant A4,712,932840,639
Events in quadrant B3,382,183883,346
Events in quadrant C3,530,301865,133
Events in quadrant D7,902,923652,926

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184720
B0138090
C0143460
D0276390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6184641.034929%
B6184420.679172%
C6184991.600906%
D6184206633.408797%

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 7569 6185 2 2 0.03% 0.03%
B 7569 6185 5 5 0.07% 0.08%
C 7569 6185 10 10 0.13% 0.16%
D 7569 6184 1689 1689 22.31% 27.31%

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 0 13 1448829 8803.62 841 828 164.5
A 6 16 18770 109.08 841 828 164.5
A 13 254 9625 53.48 841 828 164.5
B 10 246 56416 364.15 841 823 152.7
B 0 229 20996 132.14 841 823 152.7
B 12 111 17554 109.59 841 823 152.7
C 14 238 135963 695.92 843 851 194.1
C 15 208 93402 476.7 843 851 194.1
C 2 16 16046 78.26 843 851 194.1
D 15 36 3045084 19059.02 684 671 159.7
D 7 80 1503129 9405.88 684 671 159.7
D 1 52 512511 3204.28 684 671 159.7

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