ASTROSAT CZTI

Data Quality Report

Orbit 34417

Creation date: 2022-02-08T15:42:53.569266
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/AS1A05_108T02_9000004914_34417cztM0_level2.evt modeM0/AS1A05_108T02_9000004914_34417cztM0_level2_quad_clean.evt
Size (bytes)482,734,08061,283,520
Size460.4 MB 58.4 MB
Events in quadrant A2,807,676374,315
Events in quadrant B3,298,137378,926
Events in quadrant C3,782,973367,279
Events in quadrant D4,359,330351,253

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118403
B0131842
C0147212
D0168872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5480571.040146%
B54801552.828467%
C54801071.952555%
D54801212.208029%

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 7092 5481 40 40 0.56% 0.73%
B 7092 5481 96 96 1.35% 1.75%
C 7092 5481 86 86 1.21% 1.57%
D 7092 5481 108 108 1.52% 1.97%

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 9 143 252991 1911.26 652 639 132.0
A 10 83 31068 230.46 652 639 132.0
A 13 254 10150 72.03 652 639 132.0
B 5 172 412827 3363.59 640 622 122.5
B 0 229 140455 1141.04 640 622 122.5
B 4 171 85755 694.69 640 622 122.5
C 4 254 820924 5559.03 634 640 147.6
C 15 214 232883 1573.9 634 640 147.6
C 14 67 147981 998.52 634 640 147.6
D 8 195 918102 5870.46 635 617 156.3
D 14 52 154605 985.28 635 617 156.3
D 7 80 151262 963.89 635 617 156.3

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