ASTROSAT CZTI

Data Quality Report

Orbit 36857

Creation date: 2024-06-27T21:32:27.520055
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_075T01_9000005244_36857cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36857cztM0_level2_quad_clean.evt
Size (bytes)372,801,60058,334,400
Size355.5 MB 55.6 MB
Events in quadrant A2,541,809464,672
Events in quadrant B816,6347,591
Events in quadrant C2,862,109477,842
Events in quadrant D4,699,944438,953

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111373
B054372
C0119252
D0177112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A535480.149421%
B53545354100.000000%
C5354460.859171%
D53544788.927904%

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 7357 5355 1 1 0.01% 0.02%
B 7356 5353 0 0 0.00% 0.00%
C 7357 5355 33 33 0.45% 0.62%
D 7357 5355 438 438 5.95% 8.18%

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 225906 1909.37 586 575 118.0
A 13 248 16480 134.77 586 575 118.0
A 13 6 14631 119.11 586 575 118.0
B 12 243 742940 178603.84 12 11 4.2
B 12 144 13843 3325.28 12 11 4.2
B 0 213 4788 1148.41 12 11 4.2
C 0 10 248847 1857.94 574 580 133.6
C 15 214 229773 1715.2 574 580 133.6
C 14 254 109495 815.08 574 580 133.6
D 13 171 781676 5842.17 548 531 133.7
D 12 227 449153 3355.23 548 531 133.7
D 13 249 369706 2761.05 548 531 133.7

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