ASTROSAT CZTI

Data Quality Report

Orbit 15934

Creation date: 2024-06-27T17:15:17.385668
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/AS1A04_104T03_9000002348_15934cztM0_level2.evt modeM0/AS1A04_104T03_9000002348_15934cztM0_level2_quad_clean.evt
Size (bytes)462,994,560109,880,640
Size441.5 MB 104.8 MB
Events in quadrant A3,290,010740,754
Events in quadrant B3,424,973745,202
Events in quadrant C3,316,012701,069
Events in quadrant D3,554,824693,049

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140653
B0143412
C0140642
D0148582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6421560.872138%
B6421580.903286%
C6421841.308207%
D64211011.572964%

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 7682 6422 1 1 0.01% 0.02%
B 7682 6423 0 0 0.00% 0.00%
C 7682 6422 0 0 0.00% 0.00%
D 7682 6423 50 50 0.65% 0.78%

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 0 226 7532 38.92 854 838 172.0
A 15 239 6470 32.75 854 838 172.0
A 12 194 6449 32.62 854 838 172.0
B 4 216 39454 241.25 843 825 160.1
B 0 189 28206 171.0 843 825 160.1
B 3 209 24020 144.86 843 825 160.1
C 14 238 125313 675.05 798 806 184.4
C 3 233 72468 388.54 798 806 184.4
C 13 61 5761 26.87 798 806 184.4
D 13 104 240904 1230.44 819 795 195.1
D 1 52 47778 240.76 819 795 195.1
D 15 0 40039 201.1 819 795 195.1

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