ASTROSAT CZTI

Data Quality Report

Orbit 16226

Creation date: 2024-06-27T17:19:37.514129
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/AS1T02_112T01_9000002390_16226cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16226cztM0_level2_quad_clean.evt
Size (bytes)470,064,960105,456,960
Size448.3 MB 100.6 MB
Events in quadrant A3,677,535700,306
Events in quadrant B3,620,755706,960
Events in quadrant C3,314,379688,664
Events in quadrant D3,217,587680,453

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147002
B0147121
C0136101
D0131051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59771111.857119%
B59771041.740003%
C59771322.208466%
D5977751.254810%

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 7293 5979 2 2 0.03% 0.03%
B 7293 5979 9 9 0.12% 0.15%
C 7293 5979 10 10 0.14% 0.17%
D 7293 5979 5 5 0.07% 0.08%

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 455291 2758.53 825 813 164.8
A 0 253 21407 125.0 825 813 164.8
A 15 157 18335 106.35 825 813 164.8
B 0 219 210559 1379.39 812 794 152.1
B 0 198 58487 379.38 812 794 152.1
B 4 216 32135 206.09 812 794 152.1
C 14 238 124737 695.82 780 788 178.1
C 0 207 97034 540.3 780 788 178.1
C 3 233 37904 208.36 780 788 178.1
D 1 52 100064 506.46 806 784 196.0
D 15 0 55379 278.5 806 784 196.0
D 2 234 22078 108.63 806 784 196.0

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