ASTROSAT CZTI

Data Quality Report

Orbit 18481

Creation date: 2024-06-27T17:50:23.035550
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/AS1A05_075T09_9000002740_18481cztM0_level2.evt modeM0/AS1A05_075T09_9000002740_18481cztM0_level2_quad_clean.evt
Size (bytes)288,812,16057,098,880
Size275.4 MB 54.5 MB
Events in quadrant A1,990,174364,795
Events in quadrant B2,422,752371,346
Events in quadrant C2,036,686362,687
Events in quadrant D2,032,241356,203

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085351
B098561
C086111
D087691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3875551.419355%
B38751383.561290%
C3875761.961290%
D3875481.238710%

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 5060 3875 2 2 0.04% 0.05%
B 5060 3875 53 53 1.05% 1.37%
C 5060 3875 0 0 0.00% 0.00%
D 5060 3875 9 9 0.18% 0.23%

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 4 2 41602 400.67 501 492 102.6
A 0 13 15499 146.26 501 492 102.6
A 0 226 4352 37.62 501 492 102.6
B 10 245 446745 4618.0 501 489 96.6
B 0 229 12238 121.58 501 489 96.6
B 12 111 10965 108.41 501 489 96.6
C 14 238 76398 668.66 488 493 113.5
C 3 233 31689 274.81 488 493 113.5
C 9 54 25688 221.95 488 493 113.5
D 1 52 84323 698.11 494 481 120.1
D 7 238 28812 235.9 494 481 120.1
D 2 234 19392 157.46 494 481 120.1

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