ASTROSAT CZTI

Data Quality Report

Orbit 31557

Creation date: 2024-06-27T20:29:56.110296
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/AS1A10_056T01_9000004598_31557cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31557cztM0_level2_quad_clean.evt
Size (bytes)518,296,320103,129,920
Size494.3 MB 98.4 MB
Events in quadrant A3,192,333674,752
Events in quadrant B5,200,851689,708
Events in quadrant C3,326,652656,184
Events in quadrant D3,527,997641,027

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137832
B0203872
C0140602
D0148992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6624150.226449%
B6624891.343599%
C6624871.313406%
D6624160.241546%

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 7889 6624 9 9 0.11% 0.14%
B 7889 6625 5 5 0.06% 0.08%
C 7889 6625 4 4 0.05% 0.06%
D 7889 6625 5 5 0.06% 0.08%

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 5 168 32051 192.67 818 802 162.2
A 13 254 12221 70.41 818 802 162.2
A 3 137 8065 44.78 818 802 162.2
B 6 159 1801875 11802.65 821 804 152.6
B 4 80 114235 743.33 821 804 152.6
B 0 190 21994 138.86 821 804 152.6
C 14 238 139463 756.88 787 792 183.2
C 0 10 38328 204.87 787 792 183.2
C 4 175 19069 99.76 787 792 183.2
D 8 195 491526 2639.86 787 763 185.9
D 2 250 36121 190.19 787 763 185.9
D 2 234 25652 133.88 787 763 185.9

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