ASTROSAT CZTI

Data Quality Report

Orbit 34880

Creation date: 2022-03-11T21:59:47.575447
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/AS1C07_005T01_9000004992_34880cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34880cztM0_level2_quad_clean.evt
Size (bytes)493,824,96086,961,600
Size470.9 MB 82.9 MB
Events in quadrant A2,605,356584,626
Events in quadrant B3,580,776573,259
Events in quadrant C3,698,178559,554
Events in quadrant D4,695,342527,929

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114723
B0142442
C0144322
D0178202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5532240.433839%
B55322404.338395%
C55322654.790311%
D55323255.874910%

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 7115 5533 17 17 0.24% 0.31%
B 7115 5533 157 157 2.21% 2.84%
C 7115 5533 251 251 3.53% 4.54%
D 7115 5533 255 255 3.58% 4.61%

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 15 237 76738 590.33 636 624 128.9
A 10 83 49187 376.65 636 624 128.9
A 13 6 16779 125.3 636 624 128.9
B 5 172 708814 5948.74 622 606 119.1
B 0 190 136765 1143.7 622 606 119.1
B 4 171 72497 603.86 622 606 119.1
C 0 207 943991 6783.74 598 602 139.1
C 15 214 247627 1776.31 598 602 139.1
C 0 10 90012 642.93 598 602 139.1
D 8 195 938881 6470.54 593 576 145.0
D 10 118 314244 2163.05 593 576 145.0
D 2 31 297989 2050.96 593 576 145.0

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