ASTROSAT CZTI

Data Quality Report

Orbit 00560

Creation date: 2024-06-27T13:59:47.509911
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/AS1P01_015T03_9000000076_00560cztM0_level2.evt modeM0/AS1P01_015T03_9000000076_00560cztM0_level2_quad_clean.evt
Size (bytes)750,850,56074,145,600
Size716.1 MB 70.7 MB
Events in quadrant A5,865,550467,997
Events in quadrant B5,891,128477,726
Events in quadrant C5,342,391483,925
Events in quadrant D5,307,710465,554

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209803
B0210552
C0194332
D0193712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4992320.641026%
B499270.140224%
C499290.180288%
D4992190.380609%

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 7146 4993 172 172 2.41% 3.44%
B 7146 4993 76 76 1.06% 1.52%
C 7146 4993 84 84 1.18% 1.68%
D 7146 4993 75 75 1.05% 1.50%

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 12 133 160386 483.29 1459 1439 328.9
A 0 238 28326 81.75 1459 1439 328.9
A 15 249 17308 48.25 1459 1439 328.9
B 4 250 107232 306.97 1472 1482 344.5
B 5 249 33506 92.96 1472 1482 344.5
B 15 185 30166 83.26 1472 1482 344.5
C 10 17 114277 310.26 1313 1358 364.0
C 1 1 26328 68.61 1313 1358 364.0
C 9 206 16772 42.35 1313 1358 364.0
D 1 4 196383 488.59 1246 1292 399.3
D 13 221 103920 257.02 1246 1292 399.3
D 12 22 42378 102.9 1246 1292 399.3

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