ASTROSAT CZTI

Data Quality Report

Orbit 15557

Creation date: 2024-06-27T17:10:37.606259
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/AS1T02_083T01_9000002304_15557cztM0_level2.evt modeM0/AS1T02_083T01_9000002304_15557cztM0_level2_quad_clean.evt
Size (bytes)140,569,92010,105,920
Size134.1 MB 9.6 MB
Events in quadrant A970,54644,151
Events in quadrant B1,030,50244,615
Events in quadrant C1,015,79543,063
Events in quadrant D1,114,97141,098

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039492
B041821
C041131
D044231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1802301.664817%
B1802502.774695%
C1802593.274140%
D1802713.940067%

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 2978 1804 0 0 0.00% 0.00%
B 2978 1803 5 5 0.17% 0.28%
C 2978 1803 0 0 0.00% 0.00%
D 2978 1804 31 31 1.04% 1.72%

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 0 226 2217 37.96 252 247 51.9
A 12 194 1860 31.08 252 247 51.9
A 3 137 1589 25.86 252 247 51.9
B 4 173 12483 248.94 255 249 49.1
B 4 48 11847 235.99 255 249 49.1
B 0 213 7828 154.22 255 249 49.1
C 14 238 39301 674.39 248 249 57.9
C 3 233 6718 111.71 248 249 57.9
C 13 61 1828 27.27 248 249 57.9
D 1 52 169556 2594.85 243 238 65.3
D 2 120 10252 153.47 243 238 65.3
D 2 234 5468 80.15 243 238 65.3

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