ASTROSAT CZTI

Data Quality Report

Orbit 15183

Creation date: 2024-06-27T17:04:55.614066
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/AS1T02_068T01_9000002238_15183cztM0_level2.evt modeM0/AS1T02_068T01_9000002238_15183cztM0_level2_quad_clean.evt
Size (bytes)460,756,80093,988,800
Size439.4 MB 89.6 MB
Events in quadrant A3,600,184611,487
Events in quadrant B3,329,335630,930
Events in quadrant C3,460,465604,897
Events in quadrant D3,144,309567,455

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148893
B0137402
C0140492
D0135642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6188320.517130%
B6188741.195863%
C6188250.404008%
D6188621.001939%

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 7574 6189 0 0 0.00% 0.00%
B 7574 6189 24 24 0.32% 0.39%
C 7574 6189 0 0 0.00% 0.00%
D 7573 6188 23 23 0.30% 0.37%

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 15 239 510526 3199.45 797 783 159.3
A 12 189 28884 176.38 797 783 159.3
A 0 226 6979 38.89 797 783 159.3
B 3 64 129884 866.13 804 788 149.0
B 0 197 18310 117.56 804 788 149.0
B 12 111 16846 107.74 804 788 149.0
C 3 233 429130 2386.43 777 783 179.5
C 13 61 5633 27.02 777 783 179.5
C 3 202 1849 5.94 777 783 179.5
D 13 249 117309 627.64 765 744 185.7
D 2 33 38258 201.99 765 744 185.7
D 7 38 27716 145.23 765 744 185.7

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