ASTROSAT CZTI

Data Quality Report

Orbit 17758

Creation date: 2024-06-27T17:40:34.325558
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/AS1T03_070T08_9000002646_17758cztM0_level2.evt modeM0/AS1T03_070T08_9000002646_17758cztM0_level2_quad_clean.evt
Size (bytes)462,435,84091,817,280
Size441.0 MB 87.6 MB
Events in quadrant A3,001,732602,494
Events in quadrant B3,301,669613,515
Events in quadrant C3,641,616571,885
Events in quadrant D3,641,945562,988

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129463
B0138552
C0147882
D0150162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6158440.714518%
B61581091.770055%
C61582474.011043%
D61581472.387139%

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 7403 6159 5 5 0.07% 0.08%
B 7403 6159 41 41 0.55% 0.67%
C 7403 6159 97 97 1.31% 1.57%
D 7403 6159 90 90 1.22% 1.46%

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 15 174 22343 140.59 771 757 153.5
A 4 2 13438 82.59 771 757 153.5
A 0 226 6726 38.88 771 757 153.5
B 4 142 141350 971.43 772 753 144.7
B 10 245 44065 299.26 772 753 144.7
B 0 219 32786 221.33 772 753 144.7
C 4 254 475326 2751.33 738 746 172.5
C 14 238 114878 661.67 738 746 172.5
C 3 233 99907 574.88 738 746 172.5
D 7 238 585737 3089.16 741 723 189.4
D 5 222 165035 867.65 741 723 189.4
D 10 70 28430 146.31 741 723 189.4

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