ASTROSAT CZTI

Data Quality Report

Orbit 00954

Creation date: 2024-06-27T14:05:15.151377
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/AS1P01_998T01_9000000188_00954cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00954cztM0_level2_quad_clean.evt
Size (bytes)1,056,441,600101,036,160
Size1007.5 MB 96.4 MB
Events in quadrant A7,669,134676,971
Events in quadrant B7,958,621670,061
Events in quadrant C8,562,870644,138
Events in quadrant D7,395,810638,237

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271640
B0280160
C0297590
D0263090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6167470.762121%
B6167580.940490%
C6166480.778463%
D6166260.421667%

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 7372 6168 265 265 3.59% 4.30%
B 7372 6168 281 281 3.81% 4.56%
C 7371 6167 366 366 4.97% 5.93%
D 7371 6167 207 207 2.81% 3.36%

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 14 170 180693 388.42 1932 1944 460.2
A 15 233 79085 167.63 1932 1944 460.2
A 11 79 8805 14.91 1932 1944 460.2
B 5 63 69047 145.34 1987 1994 461.4
B 8 234 68839 144.89 1987 1994 461.4
B 0 220 56526 118.2 1987 1994 461.4
C 10 34 1014845 2009.32 1831 1890 504.1
C 15 241 291093 573.67 1831 1890 504.1
C 9 52 42173 79.91 1831 1890 504.1
D 1 4 496988 910.16 1801 1865 544.0
D 13 169 51527 91.29 1801 1865 544.0
D 13 73 45198 79.66 1801 1865 544.0

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