ASTROSAT CZTI

Data Quality Report

Orbit 23376

Creation date: 2024-06-27T18:53:31.390798
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/AS1A07_138T09_9000003458_23376cztM0_level2.evt modeM0/AS1A07_138T09_9000003458_23376cztM0_level2_quad_clean.evt
Size (bytes)280,152,00056,560,320
Size267.2 MB 53.9 MB
Events in quadrant A1,877,063372,183
Events in quadrant B1,960,076382,547
Events in quadrant C1,963,057349,433
Events in quadrant D2,437,993353,330

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09018
B09014
C09418
D09420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131
B0131
C0141
D0131

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091891623
B095011649
C096401800
D0117012160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3594300.834725%
B3623300.828043%
C3588391.086957%
D3582822.289224%

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 6819 3785 0 0 0.00% 0.00%
B 6808 3800 3 3 0.04% 0.08%
C 6823 3758 0 0 0.00% 0.00%
D 6803 3758 52 52 0.76% 1.38%

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 13 254 5379 49.79 487 477 98.4
A 0 226 4363 39.47 487 477 98.4
A 3 137 4033 36.12 487 477 98.4
B 0 189 61718 674.32 481 471 90.8
B 12 111 10369 108.98 481 471 90.8
B 11 111 9225 96.38 481 471 90.8
C 14 238 75198 691.56 464 467 108.1
C 0 239 56347 517.12 464 467 108.1
C 3 233 17326 156.01 464 467 108.1
D 1 52 382893 3386.48 472 459 112.9
D 15 0 172040 1519.36 472 459 112.9
D 7 238 53154 466.62 472 459 112.9

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