ASTROSAT CZTI

Data Quality Report

Orbit 27184

Creation date: 2024-06-27T19:37:28.404642
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/AS1T03_243T01_9000003918_27184cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27184cztM0_level2_quad_clean.evt
Size (bytes)521,536,320100,313,280
Size497.4 MB 95.7 MB
Events in quadrant A3,527,804686,789
Events in quadrant B3,408,903701,813
Events in quadrant C3,327,318648,791
Events in quadrant D5,109,153566,380

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144130
B0139740
C0136900
D0193120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62201011.623794%
B6220620.996785%
C6220951.527331%
D62205909.485531%

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 7585 6221 24 24 0.32% 0.39%
B 7585 6221 0 0 0.00% 0.00%
C 7585 6221 2 2 0.03% 0.03%
D 7585 6221 544 544 7.17% 8.74%

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 13 248 106608 624.45 860 850 169.4
A 6 16 70643 412.09 860 850 169.4
A 15 174 19659 111.06 860 850 169.4
B 0 190 24801 150.48 854 838 159.2
B 5 172 19477 117.05 854 838 159.2
B 12 111 18232 109.23 854 838 159.2
C 14 238 130369 689.06 809 816 188.0
C 0 207 34982 181.72 809 816 188.0
C 15 208 7037 33.09 809 816 188.0
D 1 52 1701550 8384.62 766 752 202.8
D 7 38 255412 1255.42 766 752 202.8
D 2 250 190148 933.69 766 752 202.8

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