ASTROSAT CZTI

Data Quality Report

Orbit 27679

Creation date: 2024-06-27T19:42:55.248959
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/AS1T03_257T01_9000003976_27679cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27679cztM0_level2_quad_clean.evt
Size (bytes)534,196,80069,672,960
Size509.4 MB 66.4 MB
Events in quadrant A3,204,586423,158
Events in quadrant B3,280,944433,426
Events in quadrant C3,382,639410,477
Events in quadrant D5,850,693370,434

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138900
B0139500
C0142200
D0220480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6766841.241502%
B67671061.566425%
C67671081.595980%
D676770010.344318%

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 7451 6766 0 0 0.00% 0.00%
B 7452 6767 0 0 0.00% 0.00%
C 7452 6767 1 1 0.01% 0.01%
D 7452 6767 660 660 8.86% 9.75%

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 13 254 11258 62.15 827 807 168.2
A 15 174 8855 47.86 827 807 168.2
A 3 137 8037 43.0 827 807 168.2
B 12 111 19721 118.82 828 806 159.2
B 11 111 17893 107.34 828 806 159.2
B 14 111 15992 95.4 828 806 159.2
C 14 238 127739 676.32 796 801 187.7
C 3 233 122185 646.73 796 801 187.7
C 8 208 25829 133.35 796 801 187.7
D 12 2 1481058 7951.73 777 756 186.2
D 1 52 1243456 6675.41 777 756 186.2
D 2 250 114260 609.71 777 756 186.2

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