ASTROSAT CZTI

Data Quality Report

Orbit 20210228_A10_083T01_9000004214_level2

Creation date: 2021-03-06T11:35:57.410838
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_083T01_9000004214cztM0_level2_bc.evt modeM0/AS1A10_083T01_9000004214cztM0_level2_quad_clean.evt
Size (bytes)2,116,949,760330,289,920
Size2.0 GB 315.0 MB
Events in quadrant A7,940,7972,220,846
Events in quadrant B7,492,9802,251,340
Events in quadrant C31,548,1151,850,507
Events in quadrant D15,485,9912,012,660

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04900
B04900
C04900
D04900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0593220
B0590080
C01367150
D0880920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A242187853.241391%
B242188093.340491%
C242181062943.888843%
D2421821398.832274%

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 28323 24219 130 130 0.46% 0.54%
B 28322 24219 43 43 0.15% 0.18%
C 28322 24218 2193 2193 7.74% 9.06%
D 28321 24215 294 294 1.04% 1.21%

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 14 235 1066376 3497.49 1408 1388 304.5
A 0 13 1022514 3353.44 1408 1388 304.5
A 1 113 301584 985.86 1408 1388 304.5
B 5 255 1221335 4633.38 1398 1372 263.3
B 0 190 440286 1666.98 1398 1372 263.3
B 5 172 138428 520.53 1398 1372 263.3
C 3 233 26992945 97235.64 1161 1160 277.6
C 2 114 43754 153.44 1161 1160 277.6
C 10 9 18501 62.47 1161 1160 277.6
D 1 52 4342753 14157.32 1338 1301 306.7
D 8 195 3028650 9872.08 1338 1301 306.7
D 7 80 1336112 4352.77 1338 1301 306.7

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