ASTROSAT CZTI

Data Quality Report

Orbit 20160819_G05_253T02_9000000614_level2

Creation date: 2021-08-24T13:15:30.275568
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/AS1G05_253T02_9000000614cztM0_level2_bc.evt modeM0/AS1G05_253T02_9000000614cztM0_level2_quad_clean.evt
Size (bytes)3,707,170,5601,357,332,480
Size3.5 GB 1.3 GB
Events in quadrant A22,330,8868,578,467
Events in quadrant B28,710,0528,582,828
Events in quadrant C23,140,7638,606,239
Events in quadrant D30,933,0058,146,000

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01750
B01750
C01750
D01740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021460
B021400
C021520
D021480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02241630
B02416100
C02250870
D02557830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10504419461.852557%
B10503422712.162157%
C10504612341.174723%
D10500634683.302668%

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 123154 105275 104 104 0.08% 0.10%
B 123154 105277 291 291 0.24% 0.28%
C 123154 105267 42 42 0.03% 0.04%
D 123154 105258 225 225 0.18% 0.21%

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 13 251 1003778 874.5 5114 4994 1142.1
A 0 50 651147 565.75 5114 4994 1142.1
A 8 15 394122 340.71 5114 4994 1142.1
B 14 167 3819671 3837.65 5149 4999 994.0
B 10 16 1617925 1622.64 5149 4999 994.0
B 8 3 958142 958.88 5149 4999 994.0
C 8 208 1978105 1753.4 5035 4945 1125.3
C 9 247 949011 838.92 5035 4945 1125.3
C 12 4 246494 214.65 5035 4945 1125.3
D 2 234 2776051 2335.82 5020 4812 1186.4
D 13 235 2670511 2246.86 5020 4812 1186.4
D 2 136 2138016 1798.04 5020 4812 1186.4

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