ASTROSAT CZTI

Data Quality Report

Orbit 05461

Creation date: 2024-06-27T14:55:29.739636
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/AS1G06_087T03_9000000696_05461cztM0_level2.evt modeM0/AS1G06_087T03_9000000696_05461cztM0_level2_quad_clean.evt
Size (bytes)521,245,44081,953,280
Size497.1 MB 78.2 MB
Events in quadrant A3,294,297498,839
Events in quadrant B3,555,516497,660
Events in quadrant C3,264,299502,052
Events in quadrant D5,167,033466,101

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01566
B01564
C01553
D01564

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015767533
B016334595
C015689476
D0216171027

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7428290.390415%
B7413590.795899%
C7454240.321975%
D73823374.565158%

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 7898 7662 2 2 0.03% 0.03%
B 7898 7647 12 12 0.15% 0.16%
C 7898 7665 0 0 0.00% 0.00%
D 7898 7658 256 256 3.24% 3.34%

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 0 50 38949 217.82 841 820 175.0
A 0 226 8374 43.15 841 820 175.0
A 12 194 8261 42.51 841 820 175.0
B 15 204 56855 335.6 854 833 166.9
B 11 51 45949 270.27 854 833 166.9
B 4 48 40546 237.9 854 833 166.9
C 8 128 19901 99.64 824 828 191.4
C 8 112 9309 44.3 824 828 191.4
C 8 144 7367 34.16 824 828 191.4
D 2 33 1457114 7367.1 802 776 197.7
D 8 195 154826 779.28 802 776 197.7
D 4 95 126923 638.13 802 776 197.7

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