ASTROSAT CZTI

Data Quality Report

Orbit 40956

Creation date: 2024-06-27T22:22:41.257916
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_052T04_9000005582_40956cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40956cztM0_level2_quad_clean.evt
Size (bytes)294,393,60084,326,400
Size280.8 MB 80.4 MB
Events in quadrant A2,656,162574,183
Events in quadrant B2,150,504583,297
Events in quadrant C2,456,500543,598
Events in quadrant D3,236,683495,028

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110183
B0102022
C0105832
D0132722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5098120.235386%
B509860.117693%
C5098330.647313%
D50982044.001569%

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 6951 5099 4 4 0.06% 0.08%
B 6951 5099 0 0 0.00% 0.00%
C 6951 5099 25 25 0.36% 0.49%
D 6951 5099 177 177 2.55% 3.47%

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 475484 4254.06 549 538 111.6
A 12 189 41472 366.64 549 538 111.6
A 15 191 8496 71.28 549 538 111.6
B 12 111 13388 122.49 546 531 105.0
B 11 111 12309 112.21 546 531 105.0
B 14 111 11838 107.73 546 531 105.0
C 15 214 240208 1891.71 536 539 126.7
C 0 10 110249 865.94 536 539 126.7
C 12 249 13088 99.05 536 539 126.7
D 13 249 647810 4996.14 529 512 129.6
D 2 249 436055 3361.72 529 512 129.6
D 12 6 61007 466.93 529 512 129.6

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