ASTROSAT CZTI

Data Quality Report

Orbit 29802

Creation date: 2024-06-27T20:07:52.629076
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_291T01_9000004278_29802cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29802cztM0_level2_quad_clean.evt
Size (bytes)781,274,88069,894,720
Size745.1 MB 66.7 MB
Events in quadrant A3,520,818461,132
Events in quadrant B8,096,977446,368
Events in quadrant C3,606,358430,819
Events in quadrant D8,002,167327,821

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145961
B0283651
C0148261
D0283771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6441911.412824%
B6441144122.372302%
C64412283.539823%
D6441146522.744915%

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 7666 6442 8 8 0.10% 0.12%
B 7666 6442 1032 1032 13.46% 16.02%
C 7666 6442 20 20 0.26% 0.31%
D 7666 6442 1439 1439 18.77% 22.34%

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 12 96 37163 203.63 903 889 178.1
A 13 254 14087 74.09 903 889 178.1
A 3 137 7973 39.77 903 889 178.1
B 0 189 2781897 18192.55 828 810 152.9
B 6 159 1736478 11353.91 828 810 152.9
B 0 229 215510 1404.47 828 810 152.9
C 14 238 170963 893.42 834 842 190.4
C 10 22 118035 615.46 834 842 190.4
C 14 254 44485 229.2 834 842 190.4
D 7 238 4377003 25172.61 751 733 173.9
D 8 195 453634 2605.12 751 733 173.9
D 1 52 154155 882.49 751 733 173.9

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