ASTROSAT CZTI

Data Quality Report

Orbit 41362

Creation date: 2024-06-27T22:28:08.637656
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/AS1A12_035T01_9000005660_41362cztM0_level2.fits modeM0/AS1A12_035T01_9000005660_41362cztM0_level2_quad_clean.evt
Size (bytes)70,922,88017,634,240
Size67.6 MB 16.8 MB
Events in quadrant A616,092118,454
Events in quadrant B586,596118,139
Events in quadrant C809,693104,192
Events in quadrant D522,701107,902

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025362
B025851
C031281
D023141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A112020.178571%
B1120464.107143%
C112011810.535714%
D112020.178571%

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 1120 1120 2 2 0.18% 0.18%
B 1120 1120 42 42 3.75% 3.75%
C 1120 1120 117 117 10.45% 10.45%
D 1120 1120 0 0 0.00% 0.00%

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 157963 6010.16 118 115 26.3
A 10 67 1553 54.75 118 115 26.3
A 3 137 1258 43.52 118 115 26.3
B 0 229 122918 4921.59 115 112 25.0
B 5 255 8589 339.73 115 112 25.0
B 12 111 2898 111.65 115 112 25.0
C 0 10 338651 12467.36 107 107 27.2
C 15 214 49662 1824.93 107 107 27.2
C 15 111 1082 35.91 107 107 27.2
D 5 222 28157 931.17 117 114 30.1
D 1 52 16261 536.16 117 114 30.1
D 13 249 13466 443.35 117 114 30.1

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