ASTROSAT CZTI

Data Quality Report

Orbit 35054

Creation date: 2022-03-24T14:23:36.652669
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/AS1A10_057T01_9000005022_35054cztM0_level2.evt modeM0/AS1A10_057T01_9000005022_35054cztM0_level2_quad_clean.evt
Size (bytes)514,157,76084,908,160
Size490.3 MB 81.0 MB
Events in quadrant A2,672,550564,647
Events in quadrant B3,738,324556,944
Events in quadrant C2,886,855554,598
Events in quadrant D5,895,287504,600

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115143
B0147044
C0117482
D0214802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A558040.071685%
B55793496.255601%
C5580140.250896%
D558058710.519713%

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 7194 5581 1 1 0.01% 0.02%
B 7194 5581 236 236 3.28% 4.23%
C 7194 5581 13 13 0.18% 0.23%
D 7194 5581 574 574 7.98% 10.28%

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 10 83 79753 590.22 664 652 134.0
A 13 6 16197 115.99 664 652 134.0
A 13 254 8463 58.28 664 652 134.0
B 5 172 1085220 8692.51 643 625 124.8
B 4 232 54608 432.65 643 625 124.8
B 5 200 31595 248.21 643 625 124.8
C 15 214 235287 1576.52 641 647 148.8
C 15 159 57087 379.21 641 647 148.8
C 14 67 43083 285.12 641 647 148.8
D 8 195 1403772 9364.36 614 597 149.8
D 13 249 1015533 6773.37 614 597 149.8
D 1 47 289206 1926.09 614 597 149.8

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