ASTROSAT CZTI

Data Quality Report

Orbit 20231022_A12_095T02_9000005892_level2

Creation date: 2023-10-27T11:08:31.199621
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/AS1A12_095T02_9000005892cztM0_level2.fits modeM0/AS1A12_095T02_9000005892cztM0_level2_quad_clean.evt
Size (bytes)720,270,720647,879,040
Size686.9 MB 617.9 MB
Events in quadrant A5,066,8984,764,752
Events in quadrant B4,940,7244,802,060
Events in quadrant C2,081,410907,938
Events in quadrant D2,962,6482,444,859

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03038360
B02854770
C07468520
D06055210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019960
B019980
C019980
D019940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9758377787.970651%
B9754768667.038658%
C974678290785.061611%
D975025677558.229575%

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 122684 97591 0 0 0.00% 0.00%
B 122684 97560 0 0 0.00% 0.00%
C 122683 90116 0 0 0.00% 0.00%
D 122683 94639 0 0 0.00% 0.00%

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 0 29 4323 9.47 1327 1242 325.2
A 0 30 4203 9.1 1327 1242 325.2
A 7 110 4132 8.89 1327 1242 325.2
B 2 9 4420 12.37 1312 1249 256.4
B 3 17 3706 9.58 1312 1249 256.4
B 2 8 3420 8.47 1312 1249 256.4
C 3 202 1661 8.26 552 515 138.8
C 1 81 1611 7.9 552 515 138.8
C 1 80 1581 7.68 552 515 138.8
D 15 46 2343 6.55 865 783 238.3
D 10 189 2319 6.44 865 783 238.3
D 6 38 2238 6.11 865 783 238.3

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