ASTROSAT CZTI

Data Quality Report

Orbit 41226

Creation date: 2024-06-27T22:26:10.420515
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/AS1C07_001T12_9000005632_41226cztM0_level2.fits modeM0/AS1C07_001T12_9000005632_41226cztM0_level2_quad_clean.evt
Size (bytes)60,986,88017,447,040
Size58.2 MB 16.6 MB
Events in quadrant A689,610114,335
Events in quadrant B436,587118,030
Events in quadrant C522,666113,744
Events in quadrant D526,661104,859

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027601
B020281
C022081
D023601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A101080.792079%
B101020.198020%
C1010151.485149%
D1010171.683168%

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 1010 1010 4 4 0.40% 0.40%
B 1010 1010 0 0 0.00% 0.00%
C 1010 1010 12 12 1.19% 1.19%
D 1010 1010 16 16 1.58% 1.58%

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 10 83 155281 6694.0 105 103 23.2
A 0 8 110735 4772.39 105 103 23.2
A 13 6 5427 229.66 105 103 23.2
B 0 183 7266 305.82 107 104 23.4
B 0 229 4324 180.2 107 104 23.4
B 12 111 2668 109.48 107 104 23.4
C 0 10 51174 1958.86 105 105 26.1
C 15 214 47858 1831.67 105 105 26.1
C 9 54 13174 501.29 105 105 26.1
D 13 249 73574 2742.72 102 99 26.8
D 2 249 38651 1439.09 102 99 26.8
D 5 222 11342 419.69 102 99 26.8

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