ASTROSAT CZTI

Data Quality Report

Orbit 27853

Creation date: 2024-06-27T19:45:13.705442
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/AS1A10_002T05_9000004024_27853cztM0_level2.evt modeM0/AS1A10_002T05_9000004024_27853cztM0_level2_quad_clean.evt
Size (bytes)356,898,24058,354,560
Size340.4 MB 55.7 MB
Events in quadrant A2,310,519369,505
Events in quadrant B2,488,954364,880
Events in quadrant C2,395,689351,850
Events in quadrant D3,288,625345,578

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099020
B0104650
C0101320
D0130000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4770210.440252%
B4770541.132075%
C4770711.488470%
D47701122.348008%

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 5320 4771 0 0 0.00% 0.00%
B 5320 4771 0 0 0.00% 0.00%
C 5320 4770 1 1 0.02% 0.02%
D 5320 4770 73 73 1.37% 1.53%

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 13 254 8442 64.35 597 584 122.1
A 3 137 5838 43.03 597 584 122.1
A 0 226 5200 37.8 597 584 122.1
B 4 52 85753 741.57 591 576 114.9
B 0 190 34158 292.37 591 576 114.9
B 4 200 16722 140.57 591 576 114.9
C 14 238 92153 675.33 569 572 135.6
C 3 233 74668 546.4 569 572 135.6
C 2 16 5886 39.19 569 572 135.6
D 1 52 456090 3309.06 573 556 137.7
D 13 104 386290 2802.03 573 556 137.7
D 2 250 219543 1590.75 573 556 137.7

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