ASTROSAT CZTI

Data Quality Report

Orbit 28534

Creation date: 2024-06-27T19:52:58.708056
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_058T09_9000004100_28534cztM0_level2.evt modeM0/AS1A10_058T09_9000004100_28534cztM0_level2_quad_clean.evt
Size (bytes)785,534,40097,980,480
Size749.1 MB 93.4 MB
Events in quadrant A4,428,695640,870
Events in quadrant B5,648,592608,711
Events in quadrant C3,795,789624,041
Events in quadrant D9,390,555550,875

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181703
B0217953
C0161793
D0333353

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77831882.415521%
B778480010.277492%
C7784991.271840%
D7784141218.139774%

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 8928 7786 127 127 1.42% 1.63%
B 8929 7785 524 524 5.87% 6.73%
C 8929 7786 2 2 0.02% 0.03%
D 8929 7786 1054 1054 11.80% 13.54%

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 15 174 759024 3951.46 948 927 191.9
A 13 254 15706 77.03 948 927 191.9
A 8 192 9920 46.87 948 927 191.9
B 10 245 1584062 9053.58 912 888 174.9
B 5 172 241502 1375.98 912 888 174.9
B 5 255 71173 401.93 912 888 174.9
C 14 238 148587 688.3 911 920 214.5
C 3 233 43500 198.47 911 920 214.5
C 7 247 32840 148.78 911 920 214.5
D 1 52 4913142 23307.07 860 835 210.8
D 8 195 788434 3736.86 860 835 210.8
D 2 250 233821 1105.43 860 835 210.8

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