ASTROSAT CZTI

Data Quality Report

Orbit 09793

Creation date: 2024-06-27T15:50:44.067270
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/AS1G05_218T01_9000001394_09793cztM0_level2.evt modeM0/AS1G05_218T01_9000001394_09793cztM0_level2_quad_clean.evt
Size (bytes)1,079,544,960208,581,120
Size1.0 GB 198.9 MB
Events in quadrant A7,217,9201,325,111
Events in quadrant B7,390,3021,353,244
Events in quadrant C7,002,8871,313,263
Events in quadrant D10,027,9741,250,846

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033216
B033226
C03328
D033218

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337291557
B0340841492
C0332711564
D0426522207

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155811540.988383%
B156261540.985537%
C15581880.564790%
D155125233.371583%

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 18657 16231 60 60 0.32% 0.37%
B 18657 16245 9 9 0.05% 0.06%
C 18657 16219 6 6 0.03% 0.04%
D 18657 16232 390 390 2.09% 2.40%

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 12 210 221677 597.37 1817 1776 368.1
A 0 226 16670 40.46 1817 1776 368.1
A 12 194 14965 35.83 1817 1776 368.1
B 4 239 102409 286.57 1832 1790 351.1
B 0 214 51221 140.78 1832 1790 351.1
B 12 111 39971 108.74 1832 1790 351.1
C 14 234 51088 120.47 1772 1780 409.3
C 5 128 16304 35.49 1772 1780 409.3
C 13 61 13084 27.62 1772 1780 409.3
D 1 52 1231043 2851.77 1739 1694 431.1
D 12 233 919294 2128.6 1739 1694 431.1
D 10 199 479703 1108.86 1739 1694 431.1

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