ASTROSAT CZTI

Data Quality Report

Orbit 06876

Creation date: 2024-06-27T15:12:39.550043
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/AS1A02_005T01_9000000948_06876cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06876cztM0_level2_quad_clean.evt
Size (bytes)444,746,88075,012,480
Size424.1 MB 71.5 MB
Events in quadrant A3,134,010459,314
Events in quadrant B3,317,051465,437
Events in quadrant C3,271,949465,180
Events in quadrant D3,321,983445,629

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133973
B0138852
C0135482
D0138672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6238851.362616%
B6238901.442770%
C6238981.571016%
D62381091.747355%

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 7493 6239 2 2 0.03% 0.03%
B 7493 6239 0 0 0.00% 0.00%
C 7493 6239 1 1 0.01% 0.02%
D 7493 6239 22 22 0.29% 0.35%

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 15 223 51514 315.23 794 778 161.0
A 13 248 18668 111.15 794 778 161.0
A 0 226 7664 42.78 794 778 161.0
B 0 219 108815 716.67 801 783 150.7
B 15 204 44039 286.96 801 783 150.7
B 0 214 41054 267.15 801 783 150.7
C 9 247 221343 1222.1 779 784 180.5
C 13 61 6280 30.45 779 784 180.5
C 9 16 5237 24.67 779 784 180.5
D 13 169 121729 640.42 779 756 188.9
D 8 195 84908 445.49 779 756 188.9
D 12 221 78576 411.97 779 756 188.9

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