ASTROSAT CZTI

Data Quality Report

Orbit 14764

Creation date: 2024-06-27T16:59:24.927999
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_022T06_9000002182_14764cztM0_level2.evt modeM0/AS1A04_022T06_9000002182_14764cztM0_level2_quad_clean.evt
Size (bytes)542,894,40064,359,360
Size517.7 MB 61.4 MB
Events in quadrant A4,406,012388,917
Events in quadrant B3,291,665388,703
Events in quadrant C4,892,493375,050
Events in quadrant D3,442,684374,962

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166942
B0134071
C0186501
D0138661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A602971811.909106%
B6029951.575717%
C602966611.046608%
D60291522.521148%

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 7365 6031 585 585 7.94% 9.70%
B 7365 6031 3 3 0.04% 0.05%
C 7365 6031 410 410 5.57% 6.80%
D 7365 6031 71 71 0.96% 1.18%

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 14 237 1433068 9618.79 741 727 148.9
A 12 189 66430 441.22 741 727 148.9
A 0 23 45532 300.88 741 727 148.9
B 0 229 29691 195.94 801 786 147.5
B 0 156 26525 174.48 801 786 147.5
B 0 219 23870 156.48 801 786 147.5
C 4 254 1481932 8945.12 735 741 165.6
C 3 233 460153 2774.45 735 741 165.6
C 0 207 67052 400.46 735 741 165.6
D 5 222 238882 1224.98 781 759 194.4
D 2 69 66056 335.91 781 759 194.4
D 9 1 34384 172.98 781 759 194.4

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