ASTROSAT CZTI

Data Quality Report

Orbit 13158

Creation date: 2024-06-27T16:37:02.123785
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/AS1A04_094T01_9000001942_13158cztM0_level2.evt modeM0/AS1A04_094T01_9000001942_13158cztM0_level2_quad_clean.evt
Size (bytes)462,893,76087,503,040
Size441.4 MB 83.4 MB
Events in quadrant A3,303,224553,363
Events in quadrant B4,236,104551,435
Events in quadrant C2,884,118568,476
Events in quadrant D3,165,779535,587

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138083
B0167592
C0129902
D0140882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6313250.396008%
B63135138.126089%
C631390.142563%
D6313480.760336%

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 7555 6315 1 1 0.01% 0.02%
B 7555 6315 300 300 3.97% 4.75%
C 7555 6315 0 0 0.00% 0.00%
D 7555 6315 28 28 0.37% 0.44%

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 12 189 158018 1034.24 757 741 152.1
A 0 23 108726 710.1 757 741 152.1
A 8 192 59459 386.12 757 741 152.1
B 4 239 1222008 8886.45 730 713 137.4
B 4 80 108720 785.89 730 713 137.4
B 12 111 15606 108.37 730 713 137.4
C 13 61 5374 27.18 739 743 170.4
C 8 222 2671 11.32 739 743 170.4
C 3 202 1943 7.04 739 743 170.4
D 1 52 389449 2226.92 726 708 174.6
D 2 234 23802 132.3 726 708 174.6
D 8 195 10005 53.26 726 708 174.6

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