ASTROSAT CZTI

Data Quality Report

Orbit 04409

Creation date: 2024-06-27T14:41:32.885075
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/AS1G05_230T02_9000000548_04409cztM0_level2.evt modeM0/AS1G05_230T02_9000000548_04409cztM0_level2_quad_clean.evt
Size (bytes)815,506,560167,316,480
Size777.7 MB 159.6 MB
Events in quadrant A5,766,1231,060,803
Events in quadrant B5,945,4991,049,683
Events in quadrant C6,149,7681,045,910
Events in quadrant D5,962,6681,020,599

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267952
B0269522
C0276982
D0278322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128851000.776096%
B12885880.682965%
C12885840.651921%
D128851591.233993%

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 13900 12886 40 40 0.29% 0.31%
B 13900 12886 5 5 0.04% 0.04%
C 13900 12886 52 52 0.37% 0.40%
D 13900 12886 131 131 0.94% 1.02%

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 0 50 279944 960.47 1413 1378 290.0
A 14 111 35461 117.51 1413 1378 290.0
A 12 194 14450 45.07 1413 1378 290.0
B 10 16 84122 303.38 1428 1396 272.7
B 15 54 73086 262.9 1428 1396 272.7
B 8 3 63755 228.69 1428 1396 272.7
C 9 247 481318 1509.11 1375 1384 318.0
C 9 16 181646 566.82 1375 1384 318.0
C 12 4 51858 158.71 1375 1384 318.0
D 12 22 204208 618.51 1365 1323 328.0
D 13 223 184381 558.07 1365 1323 328.0
D 2 136 110883 334.0 1365 1323 328.0

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