ASTROSAT CZTI

Data Quality Report

Orbit 17327

Creation date: 2024-06-27T17:35:02.410187
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/AS1A05_169T01_9000002558_17327cztM0_level2.evt modeM0/AS1A05_169T01_9000002558_17327cztM0_level2_quad_clean.evt
Size (bytes)706,939,200178,246,080
Size674.2 MB 170.0 MB
Events in quadrant A5,088,6011,202,295
Events in quadrant B5,211,9821,219,752
Events in quadrant C5,148,1741,131,882
Events in quadrant D5,247,4581,116,385

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219112
B0221182
C0220092
D0228764

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10519980.931647%
B105201601.520913%
C105201661.577947%
D10519790.751022%

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 13049 10521 0 0 0.00% 0.00%
B 13050 10522 0 0 0.00% 0.00%
C 13050 10522 0 0 0.00% 0.00%
D 13050 10522 14 14 0.11% 0.13%

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 11429 38.6 1324 1303 262.3
A 3 137 9825 32.48 1324 1303 262.3
A 12 194 9310 30.52 1324 1303 262.3
B 12 111 30039 115.41 1324 1293 249.1
B 4 173 29365 112.7 1324 1293 249.1
B 11 111 26124 99.69 1324 1293 249.1
C 14 238 197769 671.54 1258 1270 292.6
C 3 233 48869 162.67 1258 1270 292.6
C 13 61 9058 26.61 1258 1270 292.6
D 1 52 212764 704.3 1261 1228 300.4
D 5 222 187037 618.64 1261 1228 300.4
D 1 20 39972 129.0 1261 1228 300.4

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