ASTROSAT CZTI

Data Quality Report

Orbit 44415

Creation date: 2024-06-27T23:03:19.819748
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/AS1A13_008T08_9000005998_44415cztM0_level2.fits modeM0/AS1A13_008T08_9000005998_44415cztM0_level2_quad_clean.evt
Size (bytes)561,824,640113,356,800
Size535.8 MB 108.1 MB
Events in quadrant A5,108,105781,338
Events in quadrant B3,484,076823,754
Events in quadrant C3,778,595763,220
Events in quadrant D7,922,420611,333

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205814
B0144512
C0155702
D0280522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64992664.092937%
B64991342.061856%
C64992163.323588%
D6499120418.525927%

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 7649 6500 26 26 0.34% 0.40%
B 7649 6500 20 20 0.26% 0.31%
C 7649 6500 122 122 1.59% 1.88%
D 7649 6500 1202 1202 15.71% 18.49%

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 10 83 1843771 11118.31 805 791 165.8
A 13 248 82483 492.83 805 791 165.8
A 8 4 33231 195.7 805 791 165.8
B 0 229 71330 449.69 801 779 156.9
B 5 255 57932 364.29 801 779 156.9
B 4 170 51832 325.41 801 779 156.9
C 12 16 489178 2710.23 771 776 180.2
C 14 254 249708 1381.37 771 776 180.2
C 3 233 25957 139.73 771 776 180.2
D 5 171 1423190 7621.45 738 715 186.6
D 2 249 992571 5314.24 738 715 186.6
D 12 17 912956 4887.68 738 715 186.6

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