ASTROSAT CZTI

Data Quality Report

Orbit 04519

Creation date: 2024-06-27T14:43:14.683392
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/AS1G05_250T01_9000000568_04519cztM0_level2.evt modeM0/AS1G05_250T01_9000000568_04519cztM0_level2_quad_clean.evt
Size (bytes)554,901,12084,934,080
Size529.2 MB 81.0 MB
Events in quadrant A4,852,402515,447
Events in quadrant B3,592,607519,982
Events in quadrant C3,614,982508,269
Events in quadrant D4,229,075499,489

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196923
B0158902
C0163782
D0179512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76055176.798159%
B76052403.155819%
C76052242.945431%
D76064275.613989%

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 7940 7608 212 212 2.67% 2.79%
B 7940 7608 9 9 0.11% 0.12%
C 7940 7608 40 40 0.50% 0.53%
D 7941 7609 205 205 2.58% 2.69%

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 1252194 7081.91 856 838 176.7
A 0 50 258841 1460.14 856 838 176.7
A 8 15 23591 128.77 856 838 176.7
B 8 3 65097 380.71 875 852 168.8
B 4 48 60156 351.43 875 852 168.8
B 4 80 58465 341.41 875 852 168.8
C 9 247 316213 1625.51 839 842 194.0
C 9 54 9012 42.11 839 842 194.0
C 13 61 6697 30.18 839 842 194.0
D 9 35 561462 2854.3 813 787 196.4
D 13 235 311840 1583.52 813 787 196.4
D 2 136 72710 366.15 813 787 196.4

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