ASTROSAT CZTI

Data Quality Report

Orbit 20220406_A11_082T01_9000005056_level2

Creation date: 2022-04-13T12:39:13.125647
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_082T01_9000005056cztM0_level2_bc.evt modeM0/AS1A11_082T01_9000005056cztM0_level2_quad_clean.evt
Size (bytes)9,231,166,0801,891,742,400
Size8.6 GB 1.8 GB
Events in quadrant A32,939,78012,663,235
Events in quadrant B105,764,96911,155,909
Events in quadrant C55,052,13912,298,099
Events in quadrant D76,037,94911,311,905

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02996540
B06558630
C03691700
D04723420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029360
B029360
C029360
D029360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05190
B05190
C05190
D05200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1438693120.216864%
B1438694418730.713357%
C14386938802.696898%
D1438691622411.276926%

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 200535 143899 30 30 0.01% 0.02%
B 200535 143786 1137 1137 0.57% 0.79%
C 200535 143860 1186 1186 0.59% 0.82%
D 200535 143829 3382 3382 1.69% 2.35%

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 10 83 1885760 1146.96 7484 7382 1637.7
A 15 169 1033216 626.38 7484 7382 1637.7
A 13 6 314524 187.54 7484 7382 1637.7
B 5 236 43870326 34393.51 6429 6298 1275.4
B 5 172 34901846 27361.38 6429 6298 1275.4
B 4 232 613411 476.03 6429 6298 1275.4
C 0 10 10511739 6297.93 7263 7215 1667.9
C 4 254 6517290 3903.08 7263 7215 1667.9
C 15 214 5554794 3326.02 7263 7215 1667.9
D 7 80 18468066 11045.99 7013 6799 1671.3
D 2 249 6662599 3982.39 7013 6799 1671.3
D 8 195 4678068 2794.98 7013 6799 1671.3

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