ASTROSAT CZTI

Data Quality Report

Orbit 39184

Creation date: 2024-06-27T22:01:29.937743
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_054T02_9000005444_39184cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39184cztM0_level2_quad_clean.evt
Size (bytes)503,101,44084,934,080
Size479.8 MB 81.0 MB
Events in quadrant A2,805,372646,007
Events in quadrant B2,393,502652,812
Events in quadrant C2,582,666604,621
Events in quadrant D10,434,080302,254

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113613
B0106052
C0108492
D0345972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A523580.152818%
B523540.076409%
C523590.171920%
D5235287854.976122%

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 7148 5236 4 4 0.06% 0.08%
B 7148 5236 1 1 0.01% 0.02%
C 7148 5236 6 6 0.08% 0.11%
D 7148 5236 2481 2481 34.71% 47.38%

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 419511 3418.27 607 597 122.6
A 13 6 24305 193.45 607 597 122.6
A 2 79 16120 126.67 607 597 122.6
B 15 85 19659 168.01 595 580 113.6
B 12 111 14171 119.68 595 580 113.6
B 5 184 12965 109.06 595 580 113.6
C 15 214 223503 1671.04 576 580 133.4
C 9 187 101788 758.66 576 580 133.4
C 0 10 7890 54.8 576 580 133.4
D 12 235 7986849 69473.02 471 458 115.0
D 2 249 329913 2865.9 471 458 115.0
D 12 227 161755 1403.11 471 458 115.0

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