ASTROSAT CZTI

Data Quality Report

Orbit 13977

Creation date: 2024-06-27T16:48:39.005475
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/AS1A04_122T01_9000002064_13977cztM0_level2.evt modeM0/AS1A04_122T01_9000002064_13977cztM0_level2_quad_clean.evt
Size (bytes)557,844,48069,681,600
Size532.0 MB 66.5 MB
Events in quadrant A3,602,037416,449
Events in quadrant B3,442,543441,891
Events in quadrant C3,361,251403,814
Events in quadrant D6,029,351375,165

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149203
B0144402
C0141402
D0228032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67771111.637893%
B6777731.077173%
C6777340.501697%
D67773164.662830%

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 7808 6779 2 2 0.03% 0.03%
B 7808 6779 3 3 0.04% 0.04%
C 7808 6779 0 0 0.00% 0.00%
D 7808 6779 162 162 2.07% 2.39%

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 187090 1098.89 838 820 169.5
A 14 111 127171 745.4 838 820 169.5
A 1 162 27395 156.78 838 820 169.5
B 0 189 32931 201.04 846 829 159.7
B 0 214 28393 172.62 846 829 159.7
B 3 209 18955 113.52 846 829 159.7
C 3 233 188947 1001.96 812 816 187.8
C 13 61 5802 26.55 812 816 187.8
C 14 234 4515 19.7 812 816 187.8
D 13 122 2043316 10736.47 798 781 190.2
D 10 157 496177 2604.02 798 781 190.2
D 1 52 113121 590.51 798 781 190.2

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