ASTROSAT CZTI

Data Quality Report

Orbit 09214

Creation date: 2024-06-27T15:42:49.381002
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/AS1A02_178T01_9000001286_09214cztM0_level2.evt modeM0/AS1A02_178T01_9000001286_09214cztM0_level2_quad_clean.evt
Size (bytes)1,893,191,040298,071,360
Size1.8 GB 284.3 MB
Events in quadrant A17,888,7701,820,829
Events in quadrant B13,302,0811,864,842
Events in quadrant C11,398,9581,841,121
Events in quadrant D13,067,5541,791,540

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053220
B053226
C053246
D053228

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0752025517
B0588643180
C0539372763
D0592053298

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2461611024.476763%
B248826822.740937%
C249584491.799022%
D248867633.065981%

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 28575 25764 264 264 0.92% 1.02%
B 28575 25934 33 33 0.12% 0.13%
C 28575 25993 0 0 0.00% 0.00%
D 28575 25916 286 286 1.00% 1.10%

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 8 5 5729663 9635.45 2940 2873 594.3
A 1 162 323724 539.84 2940 2873 594.3
A 15 174 160986 266.03 2940 2873 594.3
B 8 234 1020696 1782.21 2989 2916 571.1
B 0 214 121117 206.98 2989 2916 571.1
B 4 48 117409 200.49 2989 2916 571.1
C 3 233 67859 96.78 2896 2902 671.2
C 7 221 23962 31.38 2896 2902 671.2
C 13 61 22055 28.53 2896 2902 671.2
D 1 52 992631 1308.07 2877 2805 756.7
D 9 64 272794 356.79 2877 2805 756.7
D 2 14 255687 334.19 2877 2805 756.7

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