ASTROSAT CZTI

Data Quality Report

Orbit 42071

Creation date: 2024-06-27T22:36:30.176055
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_037T03_9000005738_42071cztM0_level2.fits modeM0/AS1A12_037T03_9000005738_42071cztM0_level2_quad_clean.evt
Size (bytes)332,942,40083,741,760
Size317.5 MB 79.9 MB
Events in quadrant A4,357,114556,495
Events in quadrant B2,354,796583,916
Events in quadrant C2,396,224547,840
Events in quadrant D2,825,827495,877

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165962
B0104142
C0101192
D0118472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50171092.172613%
B5017230.458441%
C501750.099661%
D50161202.392344%

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 7019 5018 79 79 1.13% 1.57%
B 7019 5018 10 10 0.14% 0.20%
C 7019 5018 0 0 0.00% 0.00%
D 7018 5017 84 84 1.20% 1.67%

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 15 222 1599337 13855.72 561 550 115.4
A 10 83 535843 4639.06 561 550 115.4
A 15 223 34375 293.14 561 550 115.4
B 3 112 67380 615.03 562 548 108.7
B 15 85 51875 472.34 562 548 108.7
B 5 255 27736 250.2 562 548 108.7
C 15 214 211744 1633.86 549 552 129.3
C 7 220 16616 124.28 549 552 129.3
C 12 249 15230 113.55 549 552 129.3
D 12 6 281596 2093.32 544 529 134.3
D 1 52 136879 1015.5 544 529 134.3
D 12 217 93604 693.2 544 529 134.3

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