ASTROSAT CZTI

Data Quality Report

Orbit 41846

Creation date: 2024-06-27T22:33:32.176085
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/AS1A12_099T04_9000005708_41846cztM0_level2.fits modeM0/AS1A12_099T04_9000005708_41846cztM0_level2_quad_clean.evt
Size (bytes)406,356,48097,505,280
Size387.5 MB 93.0 MB
Events in quadrant A5,272,270643,813
Events in quadrant B2,702,708681,165
Events in quadrant C3,342,595619,091
Events in quadrant D3,255,405587,610

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197332
B0123682
C0137822
D0142983

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60284297.116788%
B6028170.282017%
C60292233.698789%
D60281813.002654%

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 9104 6030 291 291 3.20% 4.83%
B 9104 6030 5 5 0.05% 0.08%
C 9105 6031 227 227 2.49% 3.76%
D 9104 6030 150 150 1.65% 2.49%

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 14 24 1747544 13151.71 645 631 132.8
A 10 83 565877 4255.48 645 631 132.8
A 2 79 446222 3354.65 645 631 132.8
B 3 112 56277 439.77 655 637 126.5
B 15 35 37113 288.3 655 637 126.5
B 5 255 25371 195.49 655 637 126.5
C 0 10 631107 4282.86 629 632 147.2
C 15 214 239801 1624.69 629 632 147.2
C 0 207 19309 126.87 629 632 147.2
D 2 249 329081 2119.94 634 616 154.9
D 13 249 268878 1731.39 634 616 154.9
D 5 222 93550 599.8 634 616 154.9

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