ASTROSAT CZTI

Data Quality Report

Orbit 36950

Creation date: 2024-06-27T21:33:28.728624
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/AS1A11_024T01_9000005250_36950cztM0_level2.evt modeM0/AS1A11_024T01_9000005250_36950cztM0_level2_quad_clean.evt
Size (bytes)1,377,034,560224,386,560
Size1.3 GB 214.0 MB
Events in quadrant A7,980,8471,451,479
Events in quadrant B10,079,4941,429,234
Events in quadrant C12,259,9771,421,468
Events in quadrant D10,276,5541,361,825

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339925
B0406174
C0466964
D0419304

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16410270.164534%
B164105143.132236%
C164109525.801341%
D164105293.223644%

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 21931 16414 8 8 0.04% 0.05%
B 21931 16414 389 389 1.77% 2.37%
C 21931 16414 858 858 3.91% 5.23%
D 21931 16414 514 514 2.34% 3.13%

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 599503 1589.94 1859 1823 375.9
A 0 247 97448 254.38 1859 1823 375.9
A 15 174 30645 76.67 1859 1823 375.9
B 0 229 674148 1934.74 1819 1771 347.5
B 5 172 651514 1869.61 1819 1771 347.5
B 4 171 621639 1783.65 1819 1771 347.5
C 14 254 4271160 10372.45 1774 1790 411.6
C 15 214 694004 1681.74 1774 1790 411.6
C 0 10 321133 775.84 1774 1790 411.6
D 12 17 981542 2246.04 1783 1728 436.2
D 12 233 561741 1283.73 1783 1728 436.2
D 2 250 391663 893.85 1783 1728 436.2

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