ASTROSAT CZTI

Data Quality Report

Orbit 20220315_A11_047T09_9000005010_level2

Creation date: 2022-03-21T17:27:01.903480
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_047T09_9000005010cztM0_level2_bc.evt modeM0/AS1A11_047T09_9000005010cztM0_level2_quad_clean.evt
Size (bytes)5,831,380,8001,551,689,280
Size5.4 GB 1.4 GB
Events in quadrant A31,818,7139,694,165
Events in quadrant B43,337,0349,804,518
Events in quadrant C32,104,8059,962,129
Events in quadrant D60,987,5989,113,995

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025060
B025060
C025060
D025060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03036700
B03267090
C02601560
D03732400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04670
B04670
C04670
D04670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12290483786.816702%
B12290475226.120224%
C1229047910.643592%
D12290459014.801308%

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 169303 122926 12 12 0.01% 0.01%
B 169303 122905 292 292 0.17% 0.24%
C 169303 122908 58 58 0.03% 0.05%
D 169303 122904 835 835 0.49% 0.68%

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 15 169 6010095 4545.39 6050 5953 1320.9
A 10 83 1049296 789.85 6050 5953 1320.9
A 15 223 708556 531.9 6050 5953 1320.9
B 5 172 13581509 11159.09 6204 6068 1216.5
B 5 31 1640534 1343.54 6204 6068 1216.5
B 0 190 1223022 1000.34 6204 6068 1216.5
C 15 214 4852169 3410.08 6211 6157 1421.1
C 0 10 1784670 1251.52 6211 6157 1421.1
C 12 250 423341 293.57 6211 6157 1421.1
D 8 195 18682593 12846.81 6117 5930 1453.8
D 13 249 3301664 2266.98 6117 5930 1453.8
D 1 52 2742015 1882.03 6117 5930 1453.8

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