ASTROSAT CZTI

Data Quality Report

Orbit 40615

Creation date: 2024-06-27T22:18:15.344609
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_054T02_9000005550_40615cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40615cztM0_level2_quad_clean.evt
Size (bytes)75,899,52019,598,400
Size72.4 MB 18.7 MB
Events in quadrant A682,116132,176
Events in quadrant B707,613132,970
Events in quadrant C584,049128,323
Events in quadrant D738,510108,675

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028161
B029161
C025121
D030091

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121060.495868%
B1210211.735537%
C121060.495868%
D121012710.495868%

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 1210 1210 4 4 0.33% 0.33%
B 1210 1210 12 12 0.99% 0.99%
C 1210 1210 4 4 0.33% 0.33%
D 1210 1210 28 28 2.31% 2.31%

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 163162 5846.27 126 123 27.9
A 6 10 25620 914.27 126 123 27.9
A 10 67 1923 64.54 126 123 27.9
B 5 255 101729 3785.17 126 123 26.8
B 0 229 51921 1929.65 126 123 26.8
B 0 190 27061 1003.53 126 123 26.8
C 15 214 56369 1764.84 127 128 31.9
C 0 10 19473 607.05 127 128 31.9
C 9 187 7087 218.37 127 128 31.9
D 12 227 75090 2415.4 119 115 31.0
D 13 249 68739 2210.8 119 115 31.0
D 12 191 39996 1284.81 119 115 31.0

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