ASTROSAT CZTI

Data Quality Report

Orbit 41462

Creation date: 2024-06-27T22:29:21.818069
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/AS1T05_100T01_9000005668_41462cztM0_level2.fits modeM0/AS1T05_100T01_9000005668_41462cztM0_level2_quad_clean.evt
Size (bytes)1,046,957,760295,266,240
Size998.5 MB 281.6 MB
Events in quadrant A9,080,8462,001,471
Events in quadrant B7,994,8192,070,649
Events in quadrant C9,454,5641,915,425
Events in quadrant D10,869,2341,747,076

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375284
B0357864
C0391134
D0448254

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17494310.177204%
B17494370.211501%
C174945032.875272%
D174946623.784155%

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 25234 17498 11 11 0.04% 0.06%
B 25234 17498 5 5 0.02% 0.03%
C 25234 17498 495 495 1.96% 2.83%
D 25234 17498 592 592 2.35% 3.38%

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 1434435 3646.16 1941 1905 392.9
A 2 79 90566 225.67 1941 1905 392.9
A 13 248 51976 127.44 1941 1905 392.9
B 0 190 307228 824.7 1945 1892 370.2
B 12 111 47628 123.53 1945 1892 370.2
B 11 111 43717 112.97 1945 1892 370.2
C 0 10 1374529 3168.53 1865 1878 433.2
C 15 214 709113 1632.53 1865 1878 433.2
C 9 54 83119 187.53 1865 1878 433.2
D 13 249 1772203 3922.38 1855 1804 451.4
D 1 47 887519 1962.33 1855 1804 451.4
D 12 233 511730 1129.76 1855 1804 451.4

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