ASTROSAT CZTI

Data Quality Report

Orbit 13661

Creation date: 2024-06-27T16:44:44.006209
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_039T01_9000002026_13661cztM0_level2.evt modeM0/AS1T02_039T01_9000002026_13661cztM0_level2_quad_clean.evt
Size (bytes)137,623,6806,719,040
Size131.2 MB 6.4 MB
Events in quadrant A982,88224,201
Events in quadrant B929,72224,545
Events in quadrant C930,01424,539
Events in quadrant D1,215,98913,237

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038922
B037421
C037581
D045661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1569503.186743%
B1569452.868069%
C1569251.593372%
D15691549.815169%

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 2775 1571 10 10 0.36% 0.64%
B 2775 1571 0 0 0.00% 0.00%
C 2775 1571 1 1 0.04% 0.06%
D 2775 1571 104 104 3.75% 6.62%

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 9 143 83219 1730.99 231 228 47.9
A 15 69 5547 110.94 231 228 47.9
A 1 162 3130 60.53 231 228 47.9
B 12 111 5011 103.87 236 231 46.0
B 0 219 4409 90.79 236 231 46.0
B 11 111 4049 82.96 236 231 46.0
C 3 233 50404 947.98 223 225 52.9
C 0 207 6377 116.22 223 225 52.9
C 13 61 1706 27.98 223 225 52.9
D 13 122 195226 3739.35 209 202 52.2
D 13 104 123150 2357.38 209 202 52.2
D 5 222 51245 978.69 209 202 52.2

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