ASTROSAT CZTI

Data Quality Report

Orbit 11631

Creation date: 2024-06-27T16:16:09.102961
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/AS1A04_049T01_9000001710_11631cztM0_level2.evt modeM0/AS1A04_049T01_9000001710_11631cztM0_level2_quad_clean.evt
Size (bytes)1,031,921,280127,393,920
Size984.1 MB 121.5 MB
Events in quadrant A11,979,416727,774
Events in quadrant B6,892,456789,487
Events in quadrant C4,794,749824,374
Events in quadrant D6,852,484764,213

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430653
B0282102
C0219442
D0282442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10851229521.150124%
B108515675.225325%
C10851240.221178%
D108516005.529444%

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 12398 10854 1370 1370 11.05% 12.62%
B 12398 10855 306 306 2.47% 2.82%
C 12398 10855 0 0 0.00% 0.00%
D 12398 10855 394 394 3.18% 3.63%

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 8 5 7047209 29758.3 1148 1119 236.8
A 1 162 182145 764.54 1148 1119 236.8
A 1 178 105358 440.24 1148 1119 236.8
B 4 239 1498444 6403.07 1229 1195 233.8
B 10 16 138963 589.17 1229 1195 233.8
B 3 64 124608 527.78 1229 1195 233.8
C 12 4 10212 31.5 1225 1230 285.1
C 13 61 8866 26.78 1225 1230 285.1
C 1 5 6352 17.96 1225 1230 285.1
D 13 152 986254 3408.57 1191 1155 289.0
D 1 52 628035 2169.09 1191 1155 289.0
D 10 253 116048 397.54 1191 1155 289.0

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