ASTROSAT CZTI

Data Quality Report

Orbit 16405

Creation date: 2024-06-27T17:22:12.779677
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_069T02_9000002422_16405cztM0_level2.evt modeM0/AS1A05_069T02_9000002422_16405cztM0_level2_quad_clean.evt
Size (bytes)492,022,08093,637,440
Size469.2 MB 89.3 MB
Events in quadrant A3,311,410605,366
Events in quadrant B3,765,296615,839
Events in quadrant C3,252,616588,097
Events in quadrant D4,107,965550,939

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142642
B0154651
C0140871
D0168441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68161211.775235%
B68161572.303404%
C68161231.804577%
D68164025.897887%

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 7117 6818 10 10 0.14% 0.15%
B 7117 6817 26 26 0.37% 0.38%
C 7117 6818 9 9 0.13% 0.13%
D 7117 6818 309 309 4.34% 4.53%

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 9 143 66701 396.16 818 801 166.3
A 15 174 66446 394.62 818 801 166.3
A 15 223 27032 157.69 818 801 166.3
B 15 35 137162 863.9 815 793 157.9
B 0 189 123775 779.09 815 793 157.9
B 4 173 98405 618.37 815 793 157.9
C 14 238 120522 647.09 782 785 185.0
C 0 207 49096 261.09 782 785 185.0
C 3 233 17011 87.69 782 785 185.0
D 10 70 887001 4648.38 778 756 190.7
D 12 218 172822 902.49 778 756 190.7
D 1 52 63061 326.79 778 756 190.7

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