ASTROSAT CZTI

Data Quality Report

Orbit 21156

Creation date: 2024-06-27T18:24:16.051788
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/AS1C04_001T01_9000003126_21156cztM0_level2.evt modeM0/AS1C04_001T01_9000003126_21156cztM0_level2_quad_clean.evt
Size (bytes)590,051,520121,285,440
Size562.7 MB 115.7 MB
Events in quadrant A3,178,899866,215
Events in quadrant B3,470,328868,537
Events in quadrant C3,162,161831,143
Events in quadrant D7,597,254633,240

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139691
B0145871
C0138261
D0271405

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6796500.735727%
B6796550.809300%
C6796560.824014%
D6795186627.461369%

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 7696 6796 6 6 0.08% 0.09%
B 7696 6797 12 12 0.16% 0.18%
C 7696 6797 0 0 0.00% 0.00%
D 7694 6794 1667 1667 21.67% 24.54%

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 5 16 41508 249.56 809 788 163.2
A 13 252 16430 95.87 809 788 163.2
A 13 254 8764 48.88 809 788 163.2
B 0 189 72129 470.52 803 784 151.6
B 0 190 51891 337.05 803 784 151.6
B 0 229 38718 250.17 803 784 151.6
C 14 238 121251 666.71 771 776 180.7
C 3 233 30149 162.55 771 776 180.7
C 13 61 5408 25.63 771 776 180.7
D 1 239 4574922 30291.09 623 602 151.0
D 7 238 398636 2635.78 623 602 151.0
D 1 20 71239 467.76 623 602 151.0

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