ASTROSAT CZTI

Data Quality Report

Orbit 20161

Creation date: 2024-06-27T18:11:53.809065
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/AS1A05_180T01_9000002992_20161cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20161cztM0_level2_quad_clean.evt
Size (bytes)3,306,124,800644,794,560
Size3.1 GB 614.9 MB
Events in quadrant A21,504,7034,274,735
Events in quadrant B22,199,5064,251,033
Events in quadrant C23,695,6334,064,407
Events in quadrant D29,746,1903,907,182

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0919848
B0937878
C09831910
D01182888

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08980
B08980
C08980
D08980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A441992550.576936%
B442004130.934389%
C441995191.174235%
D4419930846.977533%

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 50404 44207 61 61 0.12% 0.14%
B 50405 44208 91 91 0.18% 0.21%
C 50404 44207 3 3 0.01% 0.01%
D 50404 44207 1176 1176 2.33% 2.66%

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 14 238 335159 300.17 5495 5404 1098.6
A 9 143 55638 45.73 5495 5404 1098.6
A 0 226 46520 37.43 5495 5404 1098.6
B 4 80 435749 416.17 5444 5315 1034.3
B 12 111 124469 115.21 5444 5315 1034.3
B 0 198 116795 107.79 5444 5315 1034.3
C 3 233 2490312 2064.96 5213 5267 1203.4
C 14 238 821400 678.17 5213 5267 1203.4
C 8 208 52066 38.89 5213 5267 1203.4
D 1 52 8199824 6575.3 5162 5030 1246.3
D 9 1 957387 764.15 5162 5030 1246.3
D 1 20 243414 191.27 5162 5030 1246.3

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