ASTROSAT CZTI

Data Quality Report

Orbit 39751

Creation date: 2024-06-27T22:08:34.062524
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_022T01_9000005494_39751cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39751cztM0_level2_quad_clean.evt
Size (bytes)373,337,28099,123,840
Size356.0 MB 94.5 MB
Events in quadrant A3,781,456676,151
Events in quadrant B2,703,010707,472
Events in quadrant C3,023,223655,054
Events in quadrant D3,906,864598,559

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146983
B0111882
C0120412
D0151132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52112234.279409%
B5211190.364613%
C5211350.671656%
D52112334.471311%

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 7334 5212 167 167 2.28% 3.20%
B 7334 5212 10 10 0.14% 0.19%
C 7334 5212 30 30 0.41% 0.58%
D 7334 5212 201 201 2.74% 3.86%

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 15 174 503331 3927.73 628 615 128.0
A 10 83 469204 3661.09 628 615 128.0
A 13 248 312927 2440.1 628 615 128.0
B 5 172 102526 866.61 628 614 117.6
B 0 190 45378 380.65 628 614 117.6
B 4 251 25227 209.3 628 614 117.6
C 15 208 258435 1818.33 615 621 141.8
C 15 214 217053 1526.47 615 621 141.8
C 9 187 84849 594.05 615 621 141.8
D 12 227 1113289 7422.69 614 597 149.9
D 2 250 134510 893.32 614 597 149.9
D 12 233 99227 657.95 614 597 149.9

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