ASTROSAT CZTI

Data Quality Report

Orbit 11536

Creation date: 2024-06-27T16:14:25.797327
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/AS1G08_009T01_9000001692_11536cztM0_level2.evt modeM0/AS1G08_009T01_9000001692_11536cztM0_level2_quad_clean.evt
Size (bytes)524,600,64097,344,000
Size500.3 MB 92.8 MB
Events in quadrant A4,914,545629,426
Events in quadrant B3,887,771653,788
Events in quadrant C2,796,479641,182
Events in quadrant D3,888,697610,850

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187822
B0154511
C0121861
D0153911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58974898.292352%
B58972594.392064%
C5897470.797015%
D58972534.290317%

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 7158 5899 242 242 3.38% 4.10%
B 7158 5899 106 106 1.48% 1.80%
C 7158 5899 0 0 0.00% 0.00%
D 7158 5899 132 132 1.84% 2.24%

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 1593512 10574.16 738 724 150.6
A 1 162 154963 1023.96 738 724 150.6
A 1 178 94982 625.76 738 724 150.6
B 4 239 728852 5133.7 746 730 141.8
B 15 204 150268 1054.33 746 730 141.8
B 0 214 26714 183.2 746 730 141.8
C 13 61 5341 27.83 717 721 166.0
C 3 202 1819 6.61 717 721 166.0
C 14 67 1776 6.35 717 721 166.0
D 1 52 929152 5409.74 715 695 171.6
D 2 120 91768 530.64 715 695 171.6
D 13 104 79379 458.46 715 695 171.6

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