ASTROSAT CZTI

Data Quality Report

Orbit 24017

Creation date: 2024-06-27T19:01:11.648443
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/AS1A07_165T01_9000003558_24017cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24017cztM0_level2_quad_clean.evt
Size (bytes)532,486,080140,783,040
Size507.8 MB 134.3 MB
Events in quadrant A3,707,927953,610
Events in quadrant B3,543,013972,254
Events in quadrant C3,509,789926,917
Events in quadrant D4,873,079906,121

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157282
B0152092
C0151552
D0192702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72511391.916977%
B72521251.723662%
C72521321.820188%
D72521502.068395%

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 7746 7252 50 50 0.65% 0.69%
B 7747 7253 5 5 0.06% 0.07%
C 7747 7253 9 9 0.12% 0.12%
D 7747 7253 68 68 0.88% 0.94%

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 6 16 304423 1706.76 880 860 177.9
A 13 254 12410 64.94 880 860 177.9
A 0 226 7812 39.08 880 860 177.9
B 10 247 28686 168.83 878 857 164.8
B 7 219 19667 114.12 878 857 164.8
B 12 111 19322 112.02 878 857 164.8
C 14 238 132839 683.3 838 842 193.2
C 0 239 50364 256.35 838 842 193.2
C 10 9 45567 231.52 838 842 193.2
D 8 195 785703 3802.59 850 824 206.4
D 1 52 569946 2757.29 850 824 206.4
D 12 218 84412 404.97 850 824 206.4

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