ASTROSAT CZTI

Data Quality Report

Orbit 34051

Creation date: 2024-06-27T20:55:55.232294
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/AS1A06_003T04_9000004866_34051cztM0_level2.evt modeM0/AS1A06_003T04_9000004866_34051cztM0_level2_quad_clean.evt
Size (bytes)980,164,80067,366,080
Size934.8 MB 64.2 MB
Events in quadrant A9,130,150383,278
Events in quadrant B11,478,315338,332
Events in quadrant C3,868,277460,189
Events in quadrant D4,814,663447,077

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311813
B0381352
C0152022
D0184182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5847230139.353515%
B5847385665.948350%
C58471522.599624%
D58472323.967847%

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 7159 5846 2239 2239 31.28% 38.30%
B 7159 5847 3409 3409 47.62% 58.30%
C 7160 5848 145 145 2.03% 2.48%
D 7160 5848 224 224 3.13% 3.83%

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 15 169 6851137 58767.1 581 570 116.6
A 10 83 16487 136.54 581 570 116.6
A 13 254 9477 76.41 581 570 116.6
B 5 31 5268223 51637.81 528 515 102.0
B 5 15 2732980 26785.56 528 515 102.0
B 5 172 616454 6037.87 528 515 102.0
C 0 10 553172 3679.99 650 657 150.1
C 3 233 360259 2395.1 650 657 150.1
C 15 214 273073 1814.41 650 657 150.1
D 8 195 874467 5429.32 654 635 160.9
D 13 249 349065 2164.87 654 635 160.9
D 2 250 302607 1876.22 654 635 160.9

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