ASTROSAT CZTI

Data Quality Report

Orbit 19180

Creation date: 2024-06-27T17:59:49.937109
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/AS1A05_046T01_9000002838_19180cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19180cztM0_level2_quad_clean.evt
Size (bytes)451,984,320102,499,200
Size431.0 MB 97.8 MB
Events in quadrant A3,070,207662,825
Events in quadrant B3,299,305691,822
Events in quadrant C3,382,120668,896
Events in quadrant D3,508,428640,747

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131392
B0137562
C0138052
D0147612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6305210.333069%
B63051011.601903%
C6305821.300555%
D6305821.300555%

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 7495 6306 0 0 0.00% 0.00%
B 7495 6306 20 20 0.27% 0.32%
C 7495 6306 4 4 0.05% 0.06%
D 7495 6306 37 37 0.49% 0.59%

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 11 29 7785 43.85 793 776 159.9
A 13 254 7474 41.9 793 776 159.9
A 0 226 6802 37.7 793 776 159.9
B 7 220 91306 596.93 802 781 151.7
B 3 64 26406 168.97 802 781 151.7
B 0 189 25289 161.61 802 781 151.7
C 3 233 210032 1147.91 777 782 182.3
C 14 238 119988 653.94 777 782 182.3
C 0 207 22911 121.4 777 782 182.3
D 11 176 311619 1641.32 778 758 189.4
D 1 52 191917 1009.31 778 758 189.4
D 9 68 69416 362.51 778 758 189.4

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