ASTROSAT CZTI

Data Quality Report

Orbit 18557

Creation date: 2024-06-27T17:51:32.982643
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_188T01_9000002756_18557cztM0_level2.evt modeM0/AS1A05_188T01_9000002756_18557cztM0_level2_quad_clean.evt
Size (bytes)600,886,08093,476,160
Size573.0 MB 89.1 MB
Events in quadrant A3,445,478624,820
Events in quadrant B3,238,111664,282
Events in quadrant C3,202,321612,318
Events in quadrant D7,887,545492,011

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142782
B0134792
C0134612
D0276602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62541742.782219%
B6254620.991366%
C6254701.119284%
D6254202132.315318%

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 7579 6255 124 124 1.64% 1.98%
B 7579 6255 4 4 0.05% 0.06%
C 7579 6255 8 8 0.11% 0.13%
D 7579 6255 1958 1958 25.83% 31.30%

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 13 422601 2693.19 783 770 156.6
A 13 254 11005 65.35 783 770 156.6
A 0 226 6668 37.66 783 770 156.6
B 3 64 44091 290.28 802 786 149.2
B 15 222 18963 121.84 802 786 149.2
B 0 183 18647 119.72 802 786 149.2
C 9 54 131411 744.45 756 761 175.5
C 14 238 119859 678.63 756 761 175.5
C 13 61 5386 26.35 756 761 175.5
D 1 52 5009374 31877.72 648 629 157.1
D 7 238 383134 2434.42 648 629 157.1
D 15 145 34010 212.45 648 629 157.1

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