ASTROSAT CZTI

Data Quality Report

Orbit 28540

Creation date: 2024-06-27T19:53:03.509994
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/AS1A10_058T09_9000004100_28540cztM0_level2.evt modeM0/AS1A10_058T09_9000004100_28540cztM0_level2_quad_clean.evt
Size (bytes)607,795,20088,974,720
Size579.6 MB 84.9 MB
Events in quadrant A3,501,111580,643
Events in quadrant B4,486,831577,388
Events in quadrant C3,437,323556,971
Events in quadrant D6,533,012516,890

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146262
B0177242
C0144292
D0241182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6631761.146132%
B66324717.101930%
C66321462.201448%
D663274611.248492%

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 7661 6631 1 1 0.01% 0.02%
B 7662 6632 272 272 3.55% 4.10%
C 7662 6632 3 3 0.04% 0.05%
D 7662 6632 657 657 8.57% 9.91%

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 15 174 193506 1126.75 856 839 171.0
A 13 254 12981 71.01 856 839 171.0
A 3 137 8154 42.78 856 839 171.0
B 10 245 1171594 7466.78 827 807 156.8
B 0 230 31035 192.78 827 807 156.8
B 12 111 19465 118.99 827 807 156.8
C 14 238 147819 778.9 808 813 188.7
C 7 247 105933 556.97 808 813 188.7
C 14 254 24717 126.65 808 813 188.7
D 1 52 2658305 13832.37 798 778 192.1
D 8 195 730017 3795.67 798 778 192.1
D 2 250 38962 198.75 798 778 192.1

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