ASTROSAT CZTI

Data Quality Report

Orbit 26057

Creation date: 2024-06-27T19:24:20.617984
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_085T03_9000003764_26057cztM0_level2.evt modeM0/AS1A09_085T03_9000003764_26057cztM0_level2_quad_clean.evt
Size (bytes)694,607,04093,850,560
Size662.4 MB 89.5 MB
Events in quadrant A3,741,501614,535
Events in quadrant B3,366,720623,262
Events in quadrant C3,205,929598,698
Events in quadrant D10,275,397544,291

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151350
B0139870
C0134940
D0351670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66091922.905129%
B66101181.785174%
C66101512.284418%
D6610177426.838124%

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 7509 6609 68 68 0.91% 1.03%
B 7510 6610 0 0 0.00% 0.00%
C 7510 6610 0 0 0.00% 0.00%
D 7509 6609 1908 1908 25.41% 28.87%

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 534640 3224.3 826 809 165.6
A 13 254 10459 58.29 826 809 165.6
A 6 16 7503 40.43 826 809 165.6
B 0 190 85181 546.51 817 796 154.4
B 0 245 37070 234.93 817 796 154.4
B 5 172 20915 130.3 817 796 154.4
C 14 238 128698 706.35 786 790 181.1
C 3 233 8565 42.94 786 790 181.1
C 13 61 5366 25.27 786 790 181.1
D 1 3 6798620 37043.09 762 743 183.5
D 12 233 314447 1709.44 762 743 183.5
D 1 52 241398 1311.38 762 743 183.5

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