ASTROSAT CZTI

Data Quality Report

Orbit 35346

Creation date: 2022-04-12T08:11:50.646282
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/AS1A11_093T01_9000005064_35346cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35346cztM0_level2_quad_clean.evt
Size (bytes)417,769,92084,985,920
Size398.4 MB 81.0 MB
Events in quadrant A2,707,669538,220
Events in quadrant B3,022,707561,771
Events in quadrant C3,115,721560,203
Events in quadrant D3,423,467519,969

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118623
B0127162
C0127042
D0141042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5629290.515189%
B56291041.847575%
C56291021.812045%
D56291442.558181%

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 7423 5630 23 23 0.31% 0.41%
B 7423 5630 73 73 0.98% 1.30%
C 7423 5630 76 76 1.02% 1.35%
D 7423 5630 103 103 1.39% 1.83%

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 10 83 109563 857.86 636 625 127.0
A 9 143 75408 588.9 636 625 127.0
A 8 192 23464 179.85 636 625 127.0
B 5 236 234135 1937.95 638 621 120.5
B 5 172 217776 1802.19 638 621 120.5
B 15 85 21512 173.38 638 621 120.5
C 0 10 375605 2618.57 622 628 143.2
C 15 214 231370 1611.34 622 628 143.2
C 14 67 20299 137.37 622 628 143.2
D 8 195 240261 1618.42 610 592 148.1
D 1 52 204362 1376.0 610 592 148.1
D 7 80 188875 1271.42 610 592 148.1

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