ASTROSAT CZTI

Data Quality Report

Orbit 51393

Creation date: 2025-03-30T01:05:02.937997
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/AS1C07_001T03_9000006456_51393cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51393cztM0_level2_quad_clean.evt
Size (bytes)114,647,04021,594,240
Size109.3 MB 20.6 MB
Events in quadrant A1,574,230140,067
Events in quadrant B820,321155,305
Events in quadrant C884,064133,151
Events in quadrant D859,345125,940

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291
B0291
C0324
D0291

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05781164
B03385108
C03624200
D0347674

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093
B071
C0104
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1329634.740406%
B1326352.639517%
C1328705.271084%
D1328372.786145%

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 1333 1333 38 38 2.85% 2.85%
B 1333 1331 18 18 1.35% 1.35%
C 1332 1331 64 64 4.80% 4.81%
D 1332 1332 29 29 2.18% 2.18%

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 3 745598 18778.26 156 151 39.7
A 12 194 87138 2191.24 156 151 39.7
A 3 14 51067 1282.59 156 151 39.7
B 0 216 123294 3450.61 158 153 35.7
B 4 81 47739 1333.44 158 153 35.7
B 5 172 5135 139.6 158 153 35.7
C 12 250 148634 3427.44 154 152 43.3
C 13 3 43447 999.39 154 152 43.3
C 15 179 18863 431.91 154 152 43.3
D 3 12 100753 2292.47 155 149 43.9
D 11 176 65596 1491.34 155 149 43.9
D 15 108 21205 479.8 155 149 43.9

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