ASTROSAT CZTI

Data Quality Report

Orbit 39437

Creation date: 2024-06-27T22:04:33.802824
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_077T06_9000005474_39437cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39437cztM0_level2_quad_clean.evt
Size (bytes)498,029,76089,441,280
Size475.0 MB 85.3 MB
Events in quadrant A4,512,442625,851
Events in quadrant B2,656,306650,587
Events in quadrant C3,016,093610,644
Events in quadrant D7,801,778417,358

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170843
B0118532
C0124802
D0271542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57761973.410665%
B5776150.259695%
C5776190.328947%
D5776181331.388504%

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 7119 5777 159 159 2.23% 2.75%
B 7119 5777 6 6 0.08% 0.10%
C 7119 5777 10 10 0.14% 0.17%
D 7119 5777 1576 1576 22.14% 27.28%

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 15 222 1560030 12028.85 634 620 129.6
A 10 83 469325 3615.46 634 620 129.6
A 9 143 15212 112.56 634 620 129.6
B 5 172 67265 537.82 637 620 123.9
B 8 3 43559 346.51 637 620 123.9
B 5 255 23383 183.69 637 620 123.9
C 15 214 241977 1654.73 622 625 145.9
C 14 254 134125 915.29 622 625 145.9
C 9 187 98232 669.2 622 625 145.9
D 12 227 3046988 23627.12 521 506 128.9
D 12 0 2151778 16684.28 521 506 128.9
D 2 249 280746 2173.41 521 506 128.9

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