ASTROSAT CZTI

Data Quality Report

Orbit 04890

Creation date: 2024-06-27T14:48:28.929528
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/AS1G05_237T01_9000000620_04890cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04890cztM0_level2_quad_clean.evt
Size (bytes)378,008,64063,544,320
Size360.5 MB 60.6 MB
Events in quadrant A2,692,708394,147
Events in quadrant B2,785,863396,079
Events in quadrant C2,489,611391,744
Events in quadrant D3,119,141370,776

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01117716
B01147417
C01083511
D01264713

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5300711.339623%
B5299541.019060%
C5302220.414938%
D53011112.093945%

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 6512 5306 2 2 0.03% 0.04%
B 6512 5308 9 9 0.14% 0.17%
C 6512 5307 0 0 0.00% 0.00%
D 6512 5306 64 64 0.98% 1.21%

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 14 111 40776 295.33 662 650 135.9
A 0 31 38159 276.07 662 650 135.9
A 8 15 38052 275.28 662 650 135.9
B 15 204 100570 789.12 663 651 126.6
B 4 239 64616 505.17 663 651 126.6
B 0 183 14864 112.25 663 651 126.6
C 14 67 9364 59.42 634 639 146.8
C 13 61 5199 31.06 634 639 146.8
C 12 4 5185 30.96 634 639 146.8
D 2 136 214230 1364.28 637 619 156.6
D 10 15 175468 1116.72 637 619 156.6
D 13 235 92132 584.47 637 619 156.6

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