ASTROSAT CZTI

Data Quality Report

Orbit 20220227_A09_038T30_9000004974_level2

Creation date: 2022-03-15T18:40:41.752523
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/AS1A09_038T30_9000004974cztM0_level2_bc.evt modeM0/AS1A09_038T30_9000004974cztM0_level2_quad_clean.evt
Size (bytes)183,672,00069,482,880
Size175.2 MB 66.3 MB
Events in quadrant A1,226,934439,156
Events in quadrant B1,054,006484,618
Events in quadrant C931,433474,381
Events in quadrant D2,084,254438,128

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115660
B087380
C077780
D0121120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A378750413.308688%
B3787421.109057%
C3787120.316874%
D37872286.020597%

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 5341 3786 0 0 0.00% 0.00%
B 5341 3787 6 6 0.11% 0.16%
C 5341 3787 0 0 0.00% 0.00%
D 5341 3786 49 49 0.92% 1.29%

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 246703 5953.61 176 173 41.4
A 15 174 229787 5545.1 176 173 41.4
A 10 83 25466 610.82 176 173 41.4
B 4 232 77163 1866.36 193 189 41.2
B 5 172 74549 1802.98 193 189 41.2
B 5 255 54244 1310.65 193 189 41.2
C 15 214 152430 3373.66 188 185 45.1
C 0 10 26017 572.42 188 185 45.1
C 14 67 10460 227.69 188 185 45.1
D 8 195 637786 12698.99 181 176 50.2
D 13 249 320221 6374.19 181 176 50.2
D 2 250 145680 2897.94 181 176 50.2

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