ASTROSAT CZTI

Data Quality Report

Orbit 35267

Creation date: 2022-04-07T01:08:28.164532
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/AS1A11_047T09_9000005054_35267cztM0_level2.evt modeM0/AS1A11_047T09_9000005054_35267cztM0_level2_quad_clean.evt
Size (bytes)242,513,28032,019,840
Size231.3 MB 30.5 MB
Events in quadrant A853,773231,123
Events in quadrant B3,021,356184,500
Events in quadrant C2,147,773201,660
Events in quadrant D1,193,737215,713

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038281
B0102791
C076301
D047131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185440.215750%
B185474039.913700%
C185438520.765912%
D1854522.804746%

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 1854 1854 0 0 0.00% 0.00%
B 1854 1854 634 634 34.20% 34.20%
C 1854 1854 345 345 18.61% 18.61%
D 1854 1854 36 36 1.94% 1.94%

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 46257 1046.79 206 201 44.0
A 13 254 3457 74.0 206 201 44.0
A 13 6 3321 70.91 206 201 44.0
B 5 236 2044747 59208.24 171 166 34.5
B 5 172 159877 4625.01 171 166 34.5
B 4 232 66158 1911.04 171 166 34.5
C 0 10 1339708 30320.84 183 184 44.2
C 15 214 74657 1685.74 183 184 44.2
C 14 67 6482 142.56 183 184 44.2
D 12 227 100847 1998.59 200 194 50.4
D 8 195 69674 1379.61 200 194 50.4
D 10 118 62731 1241.75 200 194 50.4

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