ASTROSAT CZTI

Data Quality Report

Orbit 42605

Creation date: 2024-06-27T22:42:06.629556
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_061T07_9000005818_42605cztM0_level2.fits modeM0/AS1A12_061T07_9000005818_42605cztM0_level2_quad_clean.evt
Size (bytes)313,191,36088,459,200
Size298.7 MB 84.4 MB
Events in quadrant A2,720,606594,982
Events in quadrant B2,355,963615,646
Events in quadrant C2,468,880599,372
Events in quadrant D3,664,035523,826

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109402
B0101762
C0100882
D0142002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4925150.304569%
B4925170.345178%
C492540.081218%
D49242835.747360%

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 7048 4926 4 4 0.06% 0.08%
B 7048 4926 5 5 0.07% 0.10%
C 7048 4926 0 0 0.00% 0.00%
D 7047 4925 248 248 3.52% 5.04%

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 516243 4477.74 565 554 115.2
A 15 237 11090 91.48 565 554 115.2
A 13 254 6842 54.6 565 554 115.2
B 0 245 65193 596.45 562 548 108.4
B 7 202 24750 223.3 562 548 108.4
B 5 255 22988 207.05 562 548 108.4
C 15 214 222953 1706.87 564 570 130.3
C 3 233 28807 216.73 564 570 130.3
C 14 254 12313 90.13 564 570 130.3
D 1 52 1112444 8277.41 551 537 134.3
D 12 6 153755 1140.61 551 537 134.3
D 2 249 99011 733.07 551 537 134.3

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