ASTROSAT CZTI

Data Quality Report

Orbit 16108

Creation date: 2024-06-27T17:18:05.864488
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_209T01_9000002378_16108cztM0_level2.evt modeM0/AS1A04_209T01_9000002378_16108cztM0_level2_quad_clean.evt
Size (bytes)485,697,60066,384,000
Size463.2 MB 63.3 MB
Events in quadrant A3,462,564397,053
Events in quadrant B3,615,262399,547
Events in quadrant C3,495,244379,748
Events in quadrant D3,694,031378,930

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143213
B0147802
C0143542
D0150682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6519961.472618%
B65191071.641356%
C65191071.641356%
D65191131.733395%

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 7740 6520 2 2 0.03% 0.03%
B 7740 6520 2 2 0.03% 0.03%
C 7740 6520 0 0 0.00% 0.00%
D 7740 6520 51 51 0.66% 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 15 174 20820 112.06 892 875 178.0
A 15 239 15264 80.84 892 875 178.0
A 0 226 7922 39.59 892 875 178.0
B 0 189 91400 545.9 879 858 165.9
B 4 216 33125 194.55 879 858 165.9
B 4 173 31943 187.42 879 858 165.9
C 14 238 132259 675.39 841 848 194.6
C 9 236 72510 368.31 841 848 194.6
C 3 233 10912 51.72 841 848 194.6
D 1 52 356403 1694.7 866 843 209.8
D 13 172 39771 185.54 866 843 209.8
D 2 234 24456 112.55 866 843 209.8

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