ASTROSAT CZTI

Data Quality Report

Orbit 34345

Creation date: 2022-02-03T18:51:32.877476
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/AS1C07_001T05_9000004902_34345cztM0_level2.evt modeM0/AS1C07_001T05_9000004902_34345cztM0_level2_quad_clean.evt
Size (bytes)279,803,52055,647,360
Size266.8 MB 53.1 MB
Events in quadrant A1,543,692369,900
Events in quadrant B1,924,597370,847
Events in quadrant C1,715,364362,531
Events in quadrant D3,058,329340,636

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069051
B079221
C071111
D0115811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A339750.147189%
B3397541.589638%
C3397240.706506%
D3397631.854578%

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 3397 3397 0 0 0.00% 0.00%
B 3397 3397 33 33 0.97% 0.97%
C 3397 3397 16 16 0.47% 0.47%
D 3397 3397 54 54 1.59% 1.59%

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 16226 200.13 389 380 79.2
A 9 143 13272 162.82 389 380 79.2
A 13 6 10611 129.21 389 380 79.2
B 5 172 315125 4221.14 382 372 74.6
B 4 251 39491 524.62 382 372 74.6
B 5 255 21431 282.42 382 372 74.6
C 15 214 141151 1603.68 377 379 87.8
C 0 10 56480 639.11 377 379 87.8
C 14 254 28542 320.83 377 379 87.8
D 12 235 1052252 11140.68 379 366 94.4
D 8 195 374416 3961.62 379 366 94.4
D 2 250 61588 648.41 379 366 94.4

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