ASTROSAT CZTI

Data Quality Report

Orbit 20220122_A11_047T15_9000004882_level2

Creation date: 2022-01-25T19:09:24.904455
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_047T15_9000004882cztM0_level2_bc.evt modeM0/AS1A11_047T15_9000004882cztM0_level2_quad_clean.evt
Size (bytes)8,214,229,4401,920,749,760
Size7.7 GB 1.8 GB
Events in quadrant A31,396,56112,482,559
Events in quadrant B69,184,74212,311,571
Events in quadrant C57,530,27612,175,194
Events in quadrant D80,962,12811,416,247

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029220
B029220
C029220
D029220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05510
B05510
C05510
D05510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02943690
B04652750
C03821390
D04684840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1429114930.344970%
B1429111679911.754868%
C14291161464.300579%
D14291181135.676960%

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 197972 142933 44 44 0.02% 0.03%
B 197972 142914 437 437 0.22% 0.31%
C 197972 142914 876 876 0.44% 0.61%
D 197972 142909 818 818 0.41% 0.57%

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 850616 506.92 7587 7460 1663.3
A 10 83 366942 216.13 7587 7460 1663.3
A 13 6 358462 211.03 7587 7460 1663.3
B 5 31 18008807 12485.74 7324 7167 1441.8
B 5 15 8916170 6179.19 7324 7167 1441.8
B 5 172 8425773 5839.05 7324 7167 1441.8
C 0 239 12726488 7714.1 7309 7268 1648.8
C 15 214 6029230 3652.27 7309 7268 1648.8
C 0 10 5261011 3186.35 7309 7268 1648.8
D 8 195 28395767 16254.56 7250 7031 1746.5
D 2 249 4813908 2752.28 7250 7031 1746.5
D 10 118 3838774 2193.94 7250 7031 1746.5

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