ASTROSAT CZTI

Data Quality Report

Orbit 09405

Creation date: 2024-06-27T15:45:37.809431
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_044T09_9000001334_09405cztM0_level2.evt modeM0/AS1G07_044T09_9000001334_09405cztM0_level2_quad_clean.evt
Size (bytes)490,325,76097,009,920
Size467.6 MB 92.5 MB
Events in quadrant A3,760,810618,775
Events in quadrant B3,448,077621,878
Events in quadrant C3,738,336613,108
Events in quadrant D3,434,742604,545

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155376
B0149012
C0155595
D0149212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68871622.352258%
B68881462.119628%
C68871682.439379%
D68881492.163182%

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 8973 6890 5 5 0.06% 0.07%
B 8973 6890 0 0 0.00% 0.00%
C 8973 6890 38 38 0.42% 0.55%
D 8973 6890 9 9 0.10% 0.13%

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 8 5 353815 2017.45 858 837 175.0
A 5 16 43603 244.43 858 837 175.0
A 1 162 19171 104.79 858 837 175.0
B 0 214 49633 299.59 854 832 162.9
B 0 219 45127 271.92 854 832 162.9
B 0 187 31425 187.81 854 832 162.9
C 4 254 491763 2580.16 831 835 190.3
C 13 61 6308 28.76 831 835 190.3
C 5 96 2797 10.31 831 835 190.3
D 1 52 128903 638.0 833 812 200.8
D 8 195 58312 286.4 833 812 200.8
D 7 71 29520 142.99 833 812 200.8

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