ASTROSAT CZTI

Data Quality Report

Orbit 34755

Creation date: 2022-03-03T12:28:58.379514
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/AS1C07_004T01_9000004990_34755cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34755cztM0_level2_quad_clean.evt
Size (bytes)557,527,68046,995,840
Size531.7 MB 44.8 MB
Events in quadrant A2,792,181290,394
Events in quadrant B3,526,062301,111
Events in quadrant C3,043,423300,751
Events in quadrant D7,173,350167,769

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111413
B0135482
C0120492
D0248152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5160140.271318%
B51602084.031008%
C5160300.581395%
D5160176034.108527%

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 7252 5161 4 4 0.06% 0.08%
B 7252 5161 141 141 1.94% 2.73%
C 7252 5161 23 23 0.32% 0.45%
D 7252 5161 1668 1668 23.00% 32.32%

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 15 223 58749 435.58 674 664 133.3
A 15 174 58188 431.38 674 664 133.3
A 10 83 48115 355.84 674 664 133.3
B 5 255 395973 3146.72 673 658 125.6
B 5 172 385077 3059.99 673 658 125.6
B 0 155 62102 489.1 673 658 125.6
C 15 214 222261 1426.56 674 681 155.3
C 0 10 116701 746.95 674 681 155.3
C 14 67 70324 448.37 674 681 155.3
D 2 31 3178553 23425.67 561 548 135.7
D 8 195 582901 4292.63 561 548 135.7
D 2 250 556963 4101.44 561 548 135.7

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