ASTROSAT CZTI

Data Quality Report

Orbit 20220817_A10_123T11_9000005286_level2

Creation date: 2022-08-29T13:38:25.026167
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/AS1A10_123T11_9000005286cztM0_level2_bc.evt modeM0/AS1A10_123T11_9000005286cztM0_level2_quad_clean.evt
Size (bytes)4,199,454,7201,209,291,840
Size3.9 GB 1.1 GB
Events in quadrant A29,456,2887,890,508
Events in quadrant B27,299,2787,956,052
Events in quadrant C24,025,4967,760,090
Events in quadrant D40,687,4077,257,435

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02128950
B02080340
C01852800
D02516810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03410
B03410
C03410
D03410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017200
B017200
C017200
D017200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8407636334.321090%
B8407614291.699653%
C840769931.181074%
D8407656536.723679%

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 118196 84064 764 764 0.65% 0.91%
B 118196 84075 98 98 0.08% 0.12%
C 118196 84076 122 122 0.10% 0.15%
D 118196 84075 2025 2025 1.71% 2.41%

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 15 237 6558010 6407.95 4541 4477 1022.7
A 10 83 3503500 3421.3 4541 4477 1022.7
A 9 143 671376 652.08 4541 4477 1022.7
B 0 190 1799688 1992.04 4525 4434 901.2
B 0 213 1329126 1469.9 4525 4434 901.2
B 5 172 1263264 1396.82 4525 4434 901.2
C 15 214 3361554 3399.64 4334 4314 987.5
C 14 254 1444841 1458.72 4334 4314 987.5
C 0 10 1297223 1309.24 4334 4314 987.5
D 10 253 5893935 5563.65 4379 4262 1058.6
D 2 249 4870999 4597.34 4379 4262 1058.6
D 12 248 1994358 1879.93 4379 4262 1058.6

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