ASTROSAT CZTI

Data Quality Report

Orbit 16517

Creation date: 2024-06-27T17:23:50.171143
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/AS1A05_174T01_9000002440_16517cztM0_level2.evt modeM0/AS1A05_174T01_9000002440_16517cztM0_level2_quad_clean.evt
Size (bytes)554,051,52086,794,560
Size528.4 MB 82.8 MB
Events in quadrant A3,464,450553,777
Events in quadrant B3,388,499574,261
Events in quadrant C6,369,362502,208
Events in quadrant D3,106,646534,637

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146053
B0142862
C0233022
D0138712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66441041.565322%
B6644530.797712%
C6644112016.857315%
D6644140.210716%

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 7755 6645 19 19 0.25% 0.29%
B 7755 6645 3 3 0.04% 0.05%
C 7754 6644 927 927 11.96% 13.95%
D 7755 6646 8 8 0.10% 0.12%

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 352203 2201.47 795 781 159.6
A 15 223 40039 245.93 795 781 159.6
A 15 239 13940 82.43 795 781 159.6
B 15 35 127329 824.25 808 788 153.5
B 4 48 23986 151.11 808 788 153.5
B 12 111 18326 114.24 808 788 153.5
C 3 233 3390352 19766.7 731 736 171.5
C 14 238 112232 650.19 731 736 171.5
C 7 247 14723 81.57 731 736 171.5
D 5 222 75917 394.42 780 758 190.6
D 10 70 51616 266.89 780 758 190.6
D 1 52 33307 170.81 780 758 190.6

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