ASTROSAT CZTI

Data Quality Report

Orbit 15077

Creation date: 2024-06-27T17:03:25.784748
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/AS1T02_065T01_9000002218_15077cztM0_level2.evt modeM0/AS1T02_065T01_9000002218_15077cztM0_level2_quad_clean.evt
Size (bytes)261,737,28038,304,000
Size249.6 MB 36.5 MB
Events in quadrant A1,758,422230,468
Events in quadrant B1,949,492233,172
Events in quadrant C2,187,965224,418
Events in quadrant D1,783,869215,629

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075132
B080801
C089891
D077831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3613401.107113%
B3613501.383892%
C3613381.051758%
D3613491.356214%

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 4624 3614 1 1 0.02% 0.03%
B 4624 3614 3 3 0.06% 0.08%
C 4624 3615 0 0 0.00% 0.00%
D 4624 3614 23 23 0.50% 0.64%

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 13 248 12713 132.29 451 441 92.8
A 9 143 5094 50.16 451 441 92.8
A 13 252 5009 49.24 451 441 92.8
B 3 64 102885 1168.88 450 439 87.6
B 10 245 48372 546.9 450 439 87.6
B 4 80 12298 135.31 450 439 87.6
C 3 233 474277 4648.72 437 442 101.9
C 3 232 5313 47.79 437 442 101.9
C 13 61 3067 25.75 437 442 101.9
D 9 1 43622 403.58 435 422 107.0
D 2 120 33379 307.89 435 422 107.0
D 13 104 25921 238.21 435 422 107.0

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