ASTROSAT CZTI

Data Quality Report

Orbit 35025

Creation date: 2022-06-11T13:04:26.021353
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/AS1T05_010T01_9000005016_35025cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35025cztM0_level2_quad_clean.evt
Size (bytes)1,802,940,480250,525,440
Size1.7 GB 238.9 MB
Events in quadrant A10,835,8341,522,655
Events in quadrant B11,945,9781,549,030
Events in quadrant C11,496,7181,523,142
Events in quadrant D18,780,7201,417,383

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0468006
B0503755
C0472505
D0714705

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04680
B04680
C04680
D04680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22889330.144174%
B228892210.965529%
C22889730.318930%
D2288910194.451920%

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 29810 22894 7 7 0.02% 0.03%
B 29810 22894 139 139 0.47% 0.61%
C 29810 22894 51 51 0.17% 0.22%
D 29810 22894 883 883 2.96% 3.86%

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 10 83 240728 444.77 2681 2629 535.3
A 15 169 71982 129.55 2681 2629 535.3
A 13 6 46793 82.5 2681 2629 535.3
B 5 172 644693 1271.29 2655 2584 505.1
B 4 232 488028 961.11 2655 2584 505.1
B 0 190 141104 274.25 2655 2584 505.1
C 15 214 950399 1583.64 2607 2625 598.5
C 0 10 254331 420.58 2607 2625 598.5
C 14 67 65626 105.27 2607 2625 598.5
D 8 195 4451509 7164.84 2575 2513 620.9
D 12 233 1068268 1716.33 2575 2513 620.9
D 10 118 812385 1304.25 2575 2513 620.9

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