ASTROSAT CZTI

Data Quality Report

Orbit 46922

Creation date: 2024-06-27T23:29:28.852605
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/AS1A13_074T06_9000006284_46922cztM0_level2.fits modeM0/AS1A13_074T06_9000006284_46922cztM0_level2_quad_clean.evt
Size (bytes)162,688,32029,160,000
Size155.2 MB 27.8 MB
Events in quadrant A1,805,630195,426
Events in quadrant B1,904,209196,063
Events in quadrant C841,305196,037
Events in quadrant D1,342,344175,698

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066531
B068061
C035131
D050701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16311267.725322%
B163020912.822086%
C1630191.165644%
D1630965.889571%

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 1631 1631 8 8 0.49% 0.49%
B 1630 1630 111 111 6.81% 6.81%
C 1630 1630 3 3 0.18% 0.18%
D 1630 1630 75 75 4.60% 4.60%

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 10 83 987719 21990.01 209 204 44.9
A 13 248 5426 116.28 209 204 44.9
A 13 6 5268 112.77 209 204 44.9
B 3 112 998980 23870.49 200 194 41.8
B 5 32 52332 1246.07 200 194 41.8
B 15 36 37006 879.79 200 194 41.8
C 14 254 47202 947.26 203 204 49.6
C 13 61 1274 21.57 203 204 49.6
C 3 233 1202 20.12 203 204 49.6
D 13 249 152012 2867.06 204 197 53.0
D 1 52 134569 2537.64 204 197 53.0
D 1 232 99358 1872.68 204 197 53.0

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