ASTROSAT CZTI

Data Quality Report

Orbit 26310

Creation date: 2024-06-27T19:27:19.259625
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/AS1A09_008T02_9000003796_26310cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26310cztM0_level2_quad_clean.evt
Size (bytes)1,552,469,760310,824,000
Size1.4 GB 296.4 MB
Events in quadrant A10,457,0441,977,970
Events in quadrant B11,031,9852,023,734
Events in quadrant C11,075,4281,943,703
Events in quadrant D12,928,7281,917,846

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0462150
B0475960
C0473880
D0539110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A225302601.154017%
B225283921.740057%
C225285262.334872%
D225288713.866300%

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 33726 22536 0 0 0.00% 0.00%
B 33725 22534 37 37 0.11% 0.16%
C 33725 22534 73 73 0.22% 0.32%
D 33725 22534 525 525 1.56% 2.33%

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 7 192 94347 171.93 2685 2629 533.5
A 13 254 34546 59.83 2685 2629 533.5
A 3 137 25476 42.83 2685 2629 533.5
B 3 64 199082 390.71 2671 2598 502.9
B 0 230 148786 290.7 2671 2598 502.9
B 15 185 87393 168.62 2671 2598 502.9
C 14 238 411086 680.6 2587 2602 600.2
C 3 233 284948 470.43 2587 2602 600.2
C 4 254 163917 268.78 2587 2602 600.2
D 1 52 2148226 3498.08 2592 2529 613.4
D 11 176 428275 694.08 2592 2529 613.4
D 12 233 274418 443.25 2592 2529 613.4

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