ASTROSAT CZTI

Data Quality Report

Orbit 30762

Creation date: 2024-06-27T20:19:19.856759
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/AS1A10_053T37_9000004444_30762cztM0_level2.evt modeM0/AS1A10_053T37_9000004444_30762cztM0_level2_quad_clean.evt
Size (bytes)557,280,00081,475,200
Size531.5 MB 77.7 MB
Events in quadrant A3,028,077521,743
Events in quadrant B4,718,003521,379
Events in quadrant C3,155,813507,108
Events in quadrant D5,557,980486,357

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01284
B01282
C01282
D01282

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012910189
B018979349
C013165201
D021354392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0101
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6181731.181039%
B61591382.240623%
C61751111.797571%
D61493916.358758%

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 7153 6215 1 1 0.01% 0.02%
B 7154 6179 1 1 0.01% 0.02%
C 7156 6203 0 0 0.00% 0.00%
D 7151 6165 338 338 4.73% 5.48%

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 10957 64.56 783 769 157.8
A 3 137 7687 43.84 783 769 157.8
A 0 226 6710 37.65 783 769 157.8
B 6 159 1669637 11349.2 765 745 147.0
B 12 111 18192 118.65 765 745 147.0
B 11 111 16581 107.69 765 745 147.0
C 14 238 121245 690.4 745 751 174.5
C 3 233 85751 487.03 745 751 174.5
C 0 10 16512 90.31 745 751 174.5
D 8 195 2375898 13438.93 750 732 176.7
D 2 250 75794 424.71 750 732 176.7
D 13 249 69868 391.18 750 732 176.7

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