ASTROSAT CZTI

Data Quality Report

Orbit 20230724_A12_089T08_9000005790_level2

Creation date: 2023-07-28T13:16:49.133529
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_089T08_9000005790cztM0_level2.fits modeM0/AS1A12_089T08_9000005790cztM0_level2_quad_clean.evt
Size (bytes)230,857,920267,007,680
Size220.2 MB 254.6 MB
Events in quadrant A1,388,0881,649,899
Events in quadrant B1,335,7221,662,115
Events in quadrant C1,363,7421,606,966
Events in quadrant D1,166,2161,429,467

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0563780
B0529600
C0514830
D0657220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05160
B05180
C05180
D05180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01090
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A252631060.419586%
B25262850.336474%
C25259260.102934%
D252648273.273433%

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 82301 25265 0 0 0.00% 0.00%
B 82301 25264 0 0 0.00% 0.00%
C 82301 25263 0 0 0.00% 0.00%
D 82301 25254 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 9 19 1144 8.77 363 341 91.6
A 0 29 1117 8.47 363 341 91.6
A 7 110 1112 8.42 363 341 91.6
B 2 9 1183 11.93 353 338 70.8
B 2 8 976 9.01 353 338 70.8
B 3 80 975 9.0 353 338 70.8
C 1 81 1130 8.38 360 337 94.6
C 3 202 1076 7.81 360 337 94.6
C 3 203 1058 7.62 360 337 94.6
D 4 160 889 6.53 334 304 89.6
D 6 62 866 6.27 334 304 89.6
D 7 3 865 6.26 334 304 89.6

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