ASTROSAT CZTI

Data Quality Report

Orbit 26889

Creation date: 2024-06-27T19:34:05.805853
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_038T11_9000003878_26889cztM0_level2.evt modeM0/AS1A09_038T11_9000003878_26889cztM0_level2_quad_clean.evt
Size (bytes)353,050,56077,359,680
Size336.7 MB 73.8 MB
Events in quadrant A3,792,831504,373
Events in quadrant B2,215,232534,029
Events in quadrant C1,861,228512,281
Events in quadrant D2,539,225498,300

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142140
B095500
C084180
D0105900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A41722275.441035%
B4172471.126558%
C4172180.431448%
D4172721.725791%

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 4172 4172 174 174 4.17% 4.17%
B 4172 4172 7 7 0.17% 0.17%
C 4172 4172 0 0 0.00% 0.00%
D 4172 4172 59 59 1.41% 1.41%

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 0 13 1381030 14468.51 466 457 95.4
A 6 16 597523 6257.3 466 457 95.4
A 7 192 9653 96.37 466 457 95.4
B 0 190 238578 2595.59 476 463 91.7
B 3 64 49278 532.11 476 463 91.7
B 10 246 47486 512.58 476 463 91.7
C 14 238 74964 690.49 456 459 107.9
C 3 233 4919 41.33 456 459 107.9
C 13 61 3141 24.86 456 459 107.9
D 1 52 475771 4475.4 450 441 106.2
D 2 250 141070 1324.07 450 441 106.2
D 11 176 108488 1017.3 450 441 106.2

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