ASTROSAT CZTI

Data Quality Report

Orbit 12905

Creation date: 2024-06-27T16:33:47.329504
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/AS1A04_116T01_9000001896_12905cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12905cztM0_level2_quad_clean.evt
Size (bytes)545,650,560108,584,640
Size520.4 MB 103.6 MB
Events in quadrant A3,351,244751,577
Events in quadrant B5,488,849628,326
Events in quadrant C3,060,010748,082
Events in quadrant D4,157,393680,509

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143793
B0208612
C0139052
D0173452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6879330.479721%
B6879137920.046518%
C6879120.174444%
D68804556.613372%

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 7770 6881 0 0 0.00% 0.00%
B 7770 6881 574 574 7.39% 8.34%
C 7770 6881 0 0 0.00% 0.00%
D 7771 6882 362 362 4.66% 5.26%

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 12 189 153005 929.44 802 783 163.8
A 1 162 49816 299.39 802 783 163.8
A 1 178 20911 122.9 802 783 163.8
B 4 239 2615035 20142.13 683 665 129.8
B 3 64 94003 719.11 683 665 129.8
B 3 209 36156 273.44 683 665 129.8
C 13 61 5745 27.41 783 785 180.9
C 12 4 3059 12.57 783 785 180.9
C 8 222 2226 7.96 783 785 180.9
D 1 52 1056841 5932.6 740 717 178.0
D 13 104 123664 690.63 740 717 178.0
D 2 14 53038 293.9 740 717 178.0

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