ASTROSAT CZTI

Data Quality Report

Orbit 19718

Creation date: 2024-06-27T18:05:58.345443
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_013T01_9000002944_19718cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19718cztM0_level2_quad_clean.evt
Size (bytes)540,576,00080,193,600
Size515.5 MB 76.5 MB
Events in quadrant A3,887,420486,687
Events in quadrant B3,669,242493,196
Events in quadrant C4,432,209467,814
Events in quadrant D3,877,288462,850

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163232
B0156523
C0177772
D0167422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74352172.918628%
B74342363.174603%
C74344045.434490%
D74343364.519774%

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 7690 7436 0 0 0.00% 0.00%
B 7689 7435 4 4 0.05% 0.05%
C 7688 7433 109 109 1.42% 1.47%
D 7689 7434 154 154 2.00% 2.07%

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 10 1 316704 1703.11 917 897 185.4
A 6 16 27346 142.63 917 897 185.4
A 0 23 8957 43.46 917 897 185.4
B 12 111 22004 119.18 917 893 177.1
B 11 111 19302 103.92 917 893 177.1
B 0 230 18878 101.53 917 893 177.1
C 3 233 823429 4011.65 876 882 205.0
C 14 238 134776 653.01 876 882 205.0
C 7 247 56088 269.24 876 882 205.0
D 1 52 339034 1557.4 886 859 217.1
D 12 218 97714 446.05 886 859 217.1
D 2 16 26890 119.88 886 859 217.1

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