ASTROSAT CZTI

Data Quality Report

Orbit 30383

Creation date: 2024-06-27T20:14:32.995875
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/AS1T04_006T01_9000004370_30383cztM0_level2.evt modeM0/AS1T04_006T01_9000004370_30383cztM0_level2_quad_clean.evt
Size (bytes)597,913,920113,397,120
Size570.2 MB 108.1 MB
Events in quadrant A3,693,419762,010
Events in quadrant B5,587,850778,326
Events in quadrant C3,587,118739,979
Events in quadrant D4,800,779701,672

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150472
B0207352
C0146592
D0186454

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64801372.114198%
B64801812.793210%
C64801141.759259%
D64804196.466049%

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 9145 6480 35 35 0.38% 0.54%
B 9145 6480 4 4 0.04% 0.06%
C 9145 6482 3 3 0.03% 0.05%
D 9145 6481 339 339 3.71% 5.23%

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 13 202611 1137.16 895 883 177.4
A 8 192 26256 143.03 895 883 177.4
A 13 254 13382 70.46 895 883 177.4
B 6 159 1907109 11371.08 899 880 167.6
B 0 229 119138 705.44 899 880 167.6
B 0 190 20396 116.42 899 880 167.6
C 14 238 141195 694.45 866 874 202.1
C 3 233 40809 197.64 866 874 202.1
C 0 10 17666 83.1 866 874 202.1
D 13 104 1008041 4842.66 844 827 208.0
D 2 250 173779 831.55 844 827 208.0
D 8 195 154597 739.32 844 827 208.0

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