ASTROSAT CZTI

Data Quality Report

Orbit 02828

Creation date: 2024-06-27T14:22:10.329743
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/AS1P01_999T99_9000000410_02828cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02828cztM0_level2_quad_clean.evt
Size (bytes)1,864,949,76068,849,280
Size1.7 GB 65.7 MB
Events in quadrant A9,920,425443,581
Events in quadrant B14,887,890431,512
Events in quadrant C15,778,947340,905
Events in quadrant D15,454,740396,922

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342612
B0490081
C0520391
D0509471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67422183.233462%
B6742103515.351528%
C6742270740.151290%
D6742221332.824088%

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 6897 6743 780 780 11.31% 11.57%
B 6897 6743 4110 4110 59.59% 60.95%
C 6897 6743 3822 3822 55.42% 56.68%
D 6897 6743 4012 4012 58.17% 59.50%

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 31 207196 362.61 2433 2413 564.7
A 0 63 203640 356.32 2433 2413 564.7
A 0 226 58881 99.99 2433 2413 564.7
B 0 219 2316307 3976.67 2464 2443 581.9
B 3 10 880504 1509.06 2464 2443 581.9
B 3 11 308180 525.45 2464 2443 581.9
C 0 219 5513319 10035.97 1861 1917 549.2
C 1 16 861653 1565.53 1861 1917 549.2
C 1 192 832603 1512.64 1861 1917 549.2
D 0 226 3849063 6371.43 2006 2038 603.8
D 1 66 2330015 3855.59 2006 2038 603.8
D 1 83 838332 1385.07 2006 2038 603.8

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
Veto Counter