ASTROSAT CZTI

Data Quality Report

Orbit 06909

Creation date: 2024-06-27T15:12:58.739872
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/AS1A02_005T01_9000000948_06909cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06909cztM0_level2_quad_clean.evt
Size (bytes)534,703,680100,846,080
Size509.9 MB 96.2 MB
Events in quadrant A3,604,633631,269
Events in quadrant B4,348,290641,118
Events in quadrant C3,583,827632,564
Events in quadrant D4,131,691611,381

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162423
B0185142
C0161642
D0177522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7733951.228501%
B77333524.551920%
C7733971.254364%
D77341061.370572%

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 7893 7735 0 0 0.00% 0.00%
B 7893 7735 68 68 0.86% 0.88%
C 7893 7735 1 1 0.01% 0.01%
D 7894 7736 48 48 0.61% 0.62%

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 15 36088 186.27 914 893 188.9
A 14 111 15158 75.5 914 893 188.9
A 4 2 13989 69.31 914 893 188.9
B 0 228 536780 3025.76 920 897 177.1
B 4 173 92549 517.5 920 897 177.1
B 4 48 48841 270.71 920 897 177.1
C 9 247 73779 349.68 891 895 208.4
C 9 54 14621 65.85 891 895 208.4
C 13 61 7104 29.79 891 895 208.4
D 2 216 363254 1647.81 889 859 219.9
D 1 20 122506 553.13 889 859 219.9
D 8 195 111872 504.77 889 859 219.9

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