ASTROSAT CZTI

Data Quality Report

Orbit 09827

Creation date: 2024-06-27T15:51:05.328719
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/AS1G07_020T01_9000001398_09827cztM0_level2.evt modeM0/AS1G07_020T01_9000001398_09827cztM0_level2_quad_clean.evt
Size (bytes)474,523,20086,935,680
Size452.5 MB 82.9 MB
Events in quadrant A3,089,114552,351
Events in quadrant B3,221,302575,990
Events in quadrant C2,970,408561,026
Events in quadrant D4,669,362510,376

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131129
B0134612
C0127704
D0182796

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6199540.871108%
B6202570.919058%
C6201140.225770%
D62011722.773746%

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 7522 6203 11 11 0.15% 0.18%
B 7522 6203 3 3 0.04% 0.05%
C 7522 6203 1 1 0.01% 0.02%
D 7522 6203 163 163 2.17% 2.63%

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 14 111 86547 547.68 768 752 156.7
A 14 254 28554 177.48 768 752 156.7
A 13 248 13924 84.08 768 752 156.7
B 0 214 48425 324.18 787 769 147.0
B 4 239 46718 312.57 787 769 147.0
B 0 219 22896 150.52 787 769 147.0
C 12 4 10198 54.11 757 763 174.4
C 13 61 5802 28.9 757 763 174.4
C 10 22 4414 20.94 757 763 174.4
D 7 46 646377 3608.35 731 715 178.9
D 1 52 422932 2359.6 731 715 178.9
D 12 233 272374 1518.19 731 715 178.9

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