ASTROSAT CZTI

Data Quality Report

Orbit 09091

Creation date: 2024-06-27T15:41:02.317343
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/AS1A03_120T01_9000001266_09091cztM0_level2.evt modeM0/AS1A03_120T01_9000001266_09091cztM0_level2_quad_clean.evt
Size (bytes)490,101,12070,640,640
Size467.4 MB 67.4 MB
Events in quadrant A3,488,269430,284
Events in quadrant B3,261,455438,578
Events in quadrant C3,111,364425,397
Events in quadrant D4,538,566389,567

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01413613
B0136879
C0135666
D01773715

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65221602.453235%
B65241432.191907%
C6525801.226054%
D65214817.376169%

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 7642 6527 14 14 0.18% 0.21%
B 7642 6527 2 2 0.03% 0.03%
C 7642 6527 1 1 0.01% 0.02%
D 7642 6527 369 369 4.83% 5.65%

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 8 5 165376 980.98 824 809 167.8
A 1 162 57873 340.16 824 809 167.8
A 5 16 50937 298.81 824 809 167.8
B 0 219 27195 166.86 828 807 158.1
B 4 173 19163 116.07 828 807 158.1
B 12 111 17325 104.45 828 807 158.1
C 14 234 12651 64.68 793 796 183.3
C 13 61 5876 27.72 793 796 183.3
C 8 222 5040 23.16 793 796 183.3
D 1 52 1009576 5235.32 771 749 192.7
D 10 172 239112 1236.98 771 749 192.7
D 2 14 111653 575.53 771 749 192.7

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