ASTROSAT CZTI

Data Quality Report

Orbit 16938

Creation date: 2024-06-27T17:29:45.840121
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_182T03_9000002516_16938cztM0_level2.evt modeM0/AS1A05_182T03_9000002516_16938cztM0_level2_quad_clean.evt
Size (bytes)128,931,84027,817,920
Size123.0 MB 26.5 MB
Events in quadrant A929,376181,128
Events in quadrant B932,012184,586
Events in quadrant C971,099173,974
Events in quadrant D948,708172,064

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038691
B038831
C039321
D039441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1768874.920814%
B1768703.959276%
C1768764.298643%
D1768683.846154%

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 2344 1770 1 1 0.04% 0.06%
B 2344 1770 4 4 0.17% 0.23%
C 2344 1770 0 0 0.00% 0.00%
D 2344 1770 0 0 0.00% 0.00%

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 15 174 28742 578.3 233 227 49.3
A 0 23 4318 82.97 233 227 49.3
A 0 226 2349 43.04 233 227 49.3
B 15 35 28462 597.61 228 221 47.3
B 12 111 5474 111.16 228 221 47.3
B 11 111 4963 100.35 228 221 47.3
C 3 233 91157 1720.75 217 216 52.8
C 14 238 32880 618.06 217 216 52.8
C 13 61 1535 24.96 217 216 52.8
D 1 52 71294 1250.25 225 217 56.9
D 2 152 13508 233.79 225 217 56.9
D 2 234 5884 99.68 225 217 56.9

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