ASTROSAT CZTI

Data Quality Report

Orbit 46158

Creation date: 2024-06-27T23:19:49.633061
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/AS1A13_092T16_9000006178_46158cztM0_level2.fits modeM0/AS1A13_092T16_9000006178_46158cztM0_level2_quad_clean.evt
Size (bytes)606,974,400107,654,400
Size578.9 MB 102.7 MB
Events in quadrant A6,108,969724,505
Events in quadrant B3,741,965757,358
Events in quadrant C6,331,638688,629
Events in quadrant D5,762,062617,310

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226602
B0155172
C0235122
D0218422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67672233.295404%
B67661231.817913%
C67665928.749631%
D67666129.045226%

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 7662 6768 43 43 0.56% 0.64%
B 7661 6767 58 58 0.76% 0.86%
C 7661 6767 423 423 5.52% 6.25%
D 7661 6767 459 459 5.99% 6.78%

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 3046401 19361.24 751 735 157.3
A 7 3 100729 635.66 751 735 157.3
A 9 191 27115 167.7 751 735 157.3
B 3 112 457208 3036.2 756 732 150.3
B 5 172 229927 1524.46 756 732 150.3
B 5 171 20386 130.73 756 732 150.3
C 14 254 3011404 17443.64 730 733 172.6
C 12 2 293789 1697.95 730 733 172.6
C 10 218 144717 834.23 730 733 172.6
D 2 249 1146238 6418.3 709 688 178.5
D 2 37 575535 3220.76 709 688 178.5
D 13 249 481844 2695.82 709 688 178.5

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