ASTROSAT CZTI

Data Quality Report

Orbit 15249

Creation date: 2024-06-27T17:05:51.288011
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_073T01_9000002252_15249cztM0_level2.evt modeM0/AS1T02_073T01_9000002252_15249cztM0_level2_quad_clean.evt
Size (bytes)300,905,28045,512,640
Size287.0 MB 43.4 MB
Events in quadrant A2,031,479277,526
Events in quadrant B2,849,431270,635
Events in quadrant C2,098,455268,555
Events in quadrant D1,843,410261,607

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087731
B0111450
C087250
D085620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A425470.164551%
B42542676.276446%
C425410.023507%
D425400.000000%

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 4255 4255 0 0 0.00% 0.00%
B 4255 4255 197 197 4.63% 4.63%
C 4255 4255 0 0 0.00% 0.00%
D 4255 4255 0 0 0.00% 0.00%

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 12 189 128447 1269.74 493 482 100.8
A 0 253 5705 51.83 493 482 100.8
A 0 226 4226 37.15 493 482 100.8
B 10 16 863437 9193.84 480 469 93.9
B 10 245 40040 421.58 480 469 93.9
B 0 229 27212 284.91 480 469 93.9
C 3 233 232501 2074.2 477 479 111.9
C 4 254 5869 48.18 477 479 111.9
C 13 61 3340 25.58 477 479 111.9
D 2 136 21623 179.7 478 464 117.7
D 2 234 15506 127.75 478 464 117.7
D 2 16 10643 86.45 478 464 117.7

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