ASTROSAT CZTI

Data Quality Report

Orbit 17488

Creation date: 2024-06-27T17:37:05.277076
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_149T03_9000002590_17488cztM0_level2.evt modeM0/AS1A05_149T03_9000002590_17488cztM0_level2_quad_clean.evt
Size (bytes)575,386,56083,044,800
Size548.7 MB 79.2 MB
Events in quadrant A3,307,446531,239
Events in quadrant B3,518,471530,535
Events in quadrant C3,397,738514,499
Events in quadrant D6,732,077455,306

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143122
B0149182
C0142692
D0246032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6931931.341798%
B69311091.572645%
C69301081.558442%
D6930126818.297258%

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 7616 6931 0 0 0.00% 0.00%
B 7616 6932 5 5 0.07% 0.07%
C 7615 6931 0 0 0.00% 0.00%
D 7614 6929 952 952 12.50% 13.74%

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 4 2 20264 113.52 852 833 171.2
A 0 226 7480 38.83 852 833 171.2
A 15 174 7473 38.79 852 833 171.2
B 4 216 77022 477.83 847 827 159.5
B 7 220 67751 419.69 847 827 159.5
B 0 189 19562 117.49 847 827 159.5
C 14 238 125541 661.32 815 818 188.6
C 5 218 63889 334.42 815 818 188.6
C 3 233 12276 60.75 815 818 188.6
D 13 189 1629542 8099.49 755 739 201.1
D 1 52 728655 3619.68 755 739 201.1
D 15 0 469259 2329.79 755 739 201.1

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