ASTROSAT CZTI

Data Quality Report

Orbit 40811

Creation date: 2024-06-27T22:20:49.431849
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_099T03_9000005570_40811cztM0_level2.fits modeM0/AS1A12_099T03_9000005570_40811cztM0_level2_quad_clean.evt
Size (bytes)316,863,36088,865,280
Size302.2 MB 84.7 MB
Events in quadrant A2,942,105595,044
Events in quadrant B2,470,955617,884
Events in quadrant C2,723,590578,449
Events in quadrant D3,177,093526,401

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118093
B0109332
C0113632
D0133262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5331160.300131%
B5331140.262615%
C5331300.562746%
D5331951.782030%

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 7214 5332 7 7 0.10% 0.13%
B 7214 5332 2 2 0.03% 0.04%
C 7214 5332 22 22 0.30% 0.41%
D 7214 5332 84 84 1.16% 1.58%

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 519305 4220.27 594 582 122.9
A 13 248 49160 395.22 594 582 122.9
A 12 189 48276 388.03 594 582 122.9
B 0 190 86630 748.54 592 575 115.0
B 0 230 25654 218.15 592 575 115.0
B 12 111 14186 118.39 592 575 115.0
C 15 214 233092 1716.84 578 583 135.4
C 14 254 136431 1003.1 578 583 135.4
C 0 10 85487 626.93 578 583 135.4
D 5 222 574970 4042.66 574 557 142.1
D 12 233 134837 945.05 574 557 142.1
D 1 47 113133 792.3 574 557 142.1

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