ASTROSAT CZTI

Data Quality Report

Orbit 20210827_A10_058T12_9000004674_level2

Creation date: 2021-08-30T11:44:14.773684
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/AS1A10_058T12_9000004674cztM0_level2_bc.evt modeM0/AS1A10_058T12_9000004674cztM0_level2_quad_clean.evt
Size (bytes)3,660,770,8801,011,974,400
Size3.4 GB 965.1 MB
Events in quadrant A17,436,3776,516,353
Events in quadrant B39,533,6066,425,046
Events in quadrant C22,440,0386,157,823
Events in quadrant D26,024,3366,074,027

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016280
B016280
C016280
D016280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01671240
B02465610
C01907980
D01969010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01230
B01230
C01230
D01230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A799098681.086236%
B7990922622.830720%
C7990933134.145966%
D7990924273.037205%

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 92159 79900 0 0 0.00% 0.00%
B 92159 79894 49 49 0.05% 0.06%
C 92159 79894 363 363 0.39% 0.45%
D 92159 79897 144 144 0.16% 0.18%

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 13 254 139980 140.41 4481 4409 965.6
A 13 6 75269 73.39 4481 4409 965.6
A 14 238 52624 49.93 4481 4409 965.6
B 6 159 20343799 24153.19 4428 4320 842.1
B 10 245 1087884 1286.73 4428 4320 842.1
B 0 190 287553 336.34 4428 4320 842.1
C 3 233 3015754 3073.94 4179 4172 979.7
C 0 10 1968883 2005.39 4179 4172 979.7
C 10 22 473867 479.42 4179 4172 979.7
D 8 195 4472366 4555.8 4331 4202 980.8
D 2 250 1682248 1710.96 4331 4202 980.8
D 13 249 887776 900.9 4331 4202 980.8

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