ASTROSAT CZTI

Data Quality Report

Orbit 39351

Creation date: 2024-06-27T22:03:33.698438
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_018T01_9000005470_39351cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39351cztM0_level2_quad_clean.evt
Size (bytes)498,458,88090,414,720
Size475.4 MB 86.2 MB
Events in quadrant A2,992,691647,702
Events in quadrant B2,598,166662,937
Events in quadrant C3,064,208616,841
Events in quadrant D9,342,605402,213

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124312
B0118461
C0126741
D0318751

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5837140.239849%
B5837160.274113%
C5837250.428302%
D5837209835.943121%

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 7120 5838 6 6 0.08% 0.10%
B 7120 5838 10 10 0.14% 0.17%
C 7120 5838 18 18 0.25% 0.31%
D 7120 5838 1655 1655 23.24% 28.35%

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 10 83 413978 3155.7 644 632 131.0
A 15 223 54921 414.47 644 632 131.0
A 2 79 19439 143.58 644 632 131.0
B 15 85 33675 266.9 639 622 123.8
B 5 172 24131 189.83 639 622 123.8
B 12 111 15741 122.09 639 622 123.8
C 15 214 262021 1799.61 623 626 145.3
C 9 187 255641 1755.69 623 626 145.3
C 12 249 52385 356.34 623 626 145.3
D 12 235 6457893 49979.53 524 508 129.2
D 13 249 475003 3672.54 524 508 129.2
D 5 32 149626 1154.16 524 508 129.2

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