ASTROSAT CZTI

Data Quality Report

Orbit 19728

Creation date: 2024-06-27T18:06:05.673929
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/AS1A05_013T01_9000002944_19728cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19728cztM0_level2_quad_clean.evt
Size (bytes)448,081,92093,778,560
Size427.3 MB 89.4 MB
Events in quadrant A3,005,834617,442
Events in quadrant B3,237,524636,606
Events in quadrant C3,320,507599,259
Events in quadrant D3,597,968566,750

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126072
B0132822
C0135192
D0146272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6014260.432325%
B6014641.064184%
C6014671.114067%
D60141452.411041%

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 7394 6015 0 0 0.00% 0.00%
B 7394 6015 10 10 0.14% 0.17%
C 7394 6015 1 1 0.01% 0.02%
D 7394 6015 97 97 1.31% 1.61%

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 0 226 6766 38.08 780 766 157.6
A 13 254 5948 32.89 780 766 157.6
A 3 137 5919 32.71 780 766 157.6
B 3 64 53125 355.69 791 774 147.2
B 7 220 32428 215.07 791 774 147.2
B 0 197 18704 121.82 791 774 147.2
C 3 233 219736 1269.08 755 763 172.5
C 14 238 120541 694.19 755 763 172.5
C 7 247 30790 174.02 755 763 172.5
D 1 52 539013 2957.45 747 724 182.0
D 10 199 98525 537.33 747 724 182.0
D 7 238 59242 321.51 747 724 182.0

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