ASTROSAT CZTI

Data Quality Report

Orbit 44711

Creation date: 2024-06-27T23:05:32.193297
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/AS1A13_077T01_9000006014_44711cztM0_level2.fits modeM0/AS1A13_077T01_9000006014_44711cztM0_level2_quad_clean.evt
Size (bytes)712,800,000111,922,560
Size679.8 MB 106.7 MB
Events in quadrant A9,019,429592,456
Events in quadrant B4,077,656835,284
Events in quadrant C3,464,644798,148
Events in quadrant D9,229,122629,809

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330840
B0171860
C0159440
D0327580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7663231030.144852%
B76641051.370042%
C7664230.300104%
D7664138318.045407%

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 7663 7663 1506 1506 19.65% 19.65%
B 7664 7664 34 34 0.44% 0.44%
C 7664 7664 11 11 0.14% 0.14%
D 7664 7664 1214 1214 15.84% 15.84%

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 15 223 4696387 32370.97 691 677 145.1
A 10 83 1602946 11045.62 691 677 145.1
A 10 248 25882 173.76 691 677 145.1
B 4 170 291467 1696.08 864 838 171.4
B 0 189 88660 512.52 864 838 171.4
B 5 172 43905 251.33 864 838 171.4
C 14 254 49117 238.88 853 858 202.0
C 1 3 37409 180.93 853 858 202.0
C 3 233 19693 93.23 853 858 202.0
D 11 241 2528842 12449.56 808 784 203.1
D 13 249 836758 4116.8 808 784 203.1
D 11 192 594977 2926.13 808 784 203.1

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