ASTROSAT CZTI

Data Quality Report

Orbit 38656

Creation date: 2024-06-27T21:54:42.993722
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_061T03_9000005390_38656cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38656cztM0_level2_quad_clean.evt
Size (bytes)178,004,16036,420,480
Size169.8 MB 34.7 MB
Events in quadrant A1,272,220253,189
Events in quadrant B1,192,406255,154
Events in quadrant C1,100,127252,111
Events in quadrant D2,840,681174,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051581
B050921
C047071
D099551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A232980.343495%
B2329331.416917%
C232910.042937%
D232967729.068270%

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 2329 2329 1 1 0.04% 0.04%
B 2329 2329 23 23 0.99% 0.99%
C 2329 2329 0 0 0.00% 0.00%
D 2329 2329 603 603 25.89% 25.89%

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 212828 3812.77 261 255 55.8
A 13 248 20426 361.79 261 255 55.8
A 9 143 10437 182.63 261 255 55.8
B 5 184 117755 2272.08 257 251 51.7
B 0 213 18639 355.55 257 251 51.7
B 5 172 14815 281.61 257 251 51.7
C 15 214 96124 1578.3 253 255 60.7
C 14 254 6792 107.62 253 255 60.7
C 0 10 4691 73.03 253 255 60.7
D 13 249 1699555 31129.38 214 208 54.6
D 12 233 126109 2306.31 214 208 54.6
D 5 222 61304 1119.18 214 208 54.6

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