ASTROSAT CZTI

Data Quality Report

Orbit 18072

Creation date: 2024-06-27T17:44:41.788028
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/AS1A06_006T01_9000002684_18072cztM0_level2.evt modeM0/AS1A06_006T01_9000002684_18072cztM0_level2_quad_clean.evt
Size (bytes)899,424,000119,099,520
Size857.8 MB 113.6 MB
Events in quadrant A8,401,887733,794
Events in quadrant B4,765,633760,851
Events in quadrant C4,794,862738,052
Events in quadrant D8,604,251684,096

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315073
B0204542
C0204462
D0323102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9943144314.512723%
B99431161.166650%
C99431451.458312%
D9943113711.435181%

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 11353 9945 294 294 2.59% 2.96%
B 11353 9945 3 3 0.03% 0.03%
C 11353 9945 1 1 0.01% 0.01%
D 11353 9945 953 953 8.39% 9.58%

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 14 111 3363578 14349.46 1161 1139 234.3
A 15 174 571909 2435.8 1161 1139 234.3
A 0 226 9904 37.41 1161 1139 234.3
B 0 189 31163 131.7 1194 1165 227.8
B 12 111 28086 118.2 1194 1165 227.8
B 0 197 25355 106.2 1194 1165 227.8
C 14 238 175398 643.87 1144 1148 270.6
C 3 233 132695 486.07 1144 1148 270.6
C 9 160 13584 45.95 1144 1148 270.6
D 7 238 2231175 8243.52 1112 1080 270.5
D 5 222 1976752 7303.05 1112 1080 270.5
D 11 176 87358 318.92 1112 1080 270.5

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