ASTROSAT CZTI

Data Quality Report

Orbit 36608

Creation date: 2024-06-27T21:29:06.362691
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_073T02_9000005226_36608cztM0_level2.evt modeM0/AS1A10_073T02_9000005226_36608cztM0_level2_quad_clean.evt
Size (bytes)474,949,44053,314,560
Size452.9 MB 50.8 MB
Events in quadrant A2,756,410327,369
Events in quadrant B2,695,081330,273
Events in quadrant C3,181,284317,965
Events in quadrant D5,411,481286,857

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109433
B0107342
C0123412
D0196292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5012150.299282%
B5012210.418994%
C50121492.972865%
D50124579.118117%

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 7105 5013 3 3 0.04% 0.06%
B 7105 5013 9 9 0.13% 0.18%
C 7105 5013 106 106 1.49% 2.11%
D 7105 5013 418 418 5.88% 8.34%

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 195596 1495.73 658 648 130.3
A 15 223 13007 94.82 658 648 130.3
A 13 254 7760 54.56 658 648 130.3
B 4 171 48100 384.87 652 636 123.3
B 15 85 33403 265.7 652 636 123.3
B 0 213 18625 145.87 652 636 123.3
C 0 10 357464 2511.98 622 627 142.1
C 15 214 215506 1512.66 622 627 142.1
C 0 207 158401 1110.66 622 627 142.1
D 12 235 2521838 16914.49 616 600 149.1
D 2 250 93364 622.34 616 600 149.1
D 2 249 85742 571.2 616 600 149.1

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