ASTROSAT CZTI

Data Quality Report

Orbit 41784

Creation date: 2024-06-27T22:32:50.023097
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_9000005700_41784cztM0_level2.fits modeM0/AS1A12_052T04_9000005700_41784cztM0_level2_quad_clean.evt
Size (bytes)414,244,800105,217,920
Size395.1 MB 100.3 MB
Events in quadrant A3,948,451710,957
Events in quadrant B2,934,659724,973
Events in quadrant C3,635,740670,220
Events in quadrant D4,310,326627,452

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159183
B0132682
C0148152
D0173842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6490681.047766%
B6490170.261941%
C64902323.574730%
D64902694.144838%

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 9266 6492 54 54 0.58% 0.83%
B 9266 6492 3 3 0.03% 0.05%
C 9266 6492 228 228 2.46% 3.51%
D 9266 6492 263 263 2.84% 4.05%

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 607987 4134.13 710 692 146.9
A 15 223 579112 3937.56 710 692 146.9
A 2 79 14607 94.73 710 692 146.9
B 0 186 43479 310.98 706 685 137.6
B 0 183 30387 215.84 706 685 137.6
B 0 245 28853 204.69 706 685 137.6
C 0 10 694173 4372.56 679 682 158.6
C 15 214 258821 1627.6 679 682 158.6
C 0 207 25281 155.1 679 682 158.6
D 13 249 413891 2442.99 685 664 169.1
D 12 79 325850 1922.5 685 664 169.1
D 2 249 322421 1902.22 685 664 169.1

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