ASTROSAT CZTI

Data Quality Report

Orbit 16655

Creation date: 2024-06-27T17:25:35.317989
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_002T10_9000002460_16655cztM0_level2.evt modeM0/AS1A05_002T10_9000002460_16655cztM0_level2_quad_clean.evt
Size (bytes)639,927,36098,838,720
Size610.3 MB 94.3 MB
Events in quadrant A3,751,257618,914
Events in quadrant B4,094,781629,841
Events in quadrant C3,906,231601,704
Events in quadrant D7,074,959575,294

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167461
B0174801
C0168751
D0265911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8163510.624770%
B8163710.869778%
C8163800.980032%
D81634986.100698%

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 8664 8165 6 6 0.07% 0.07%
B 8664 8165 4 4 0.05% 0.05%
C 8664 8165 0 0 0.00% 0.00%
D 8664 8164 365 365 4.21% 4.47%

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 3 1 105255 552.8 941 917 188.7
A 12 96 22823 116.06 941 917 188.7
A 15 223 8650 40.97 941 917 188.7
B 0 189 134030 738.05 942 918 180.4
B 15 35 131106 721.83 942 918 180.4
B 0 198 60248 328.96 942 918 180.4
C 3 233 219704 1036.38 902 905 211.1
C 14 238 139848 658.13 902 905 211.1
C 7 247 26844 122.86 902 905 211.1
D 1 52 2138216 9753.22 900 874 219.1
D 2 16 1142366 5208.91 900 874 219.1
D 10 70 221243 1005.6 900 874 219.1

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