ASTROSAT CZTI

Data Quality Report

Orbit 42459

Creation date: 2024-06-27T22:40:25.938027
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/AS1C07_001T10_9000005806_42459cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42459cztM0_level2_quad_clean.evt
Size (bytes)340,246,08087,048,000
Size324.5 MB 83.0 MB
Events in quadrant A2,813,535603,512
Events in quadrant B3,547,536578,933
Events in quadrant C2,464,738573,498
Events in quadrant D3,374,662525,018

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112322
B0139482
C0105002
D0134312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5062100.197550%
B50623206.321612%
C5062250.493876%
D50612034.011065%

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 7095 5063 2 2 0.03% 0.04%
B 7095 5063 264 264 3.72% 5.21%
C 7095 5063 18 18 0.25% 0.36%
D 7094 5062 185 185 2.61% 3.65%

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 567576 4919.21 568 557 115.3
A 12 189 22303 188.66 568 557 115.3
A 13 6 14835 123.87 568 557 115.3
B 0 186 1253467 12085.12 548 534 103.7
B 15 33 37086 352.56 548 534 103.7
B 5 255 35131 333.7 548 534 103.7
C 15 214 215152 1714.77 542 544 125.2
C 14 254 112433 894.02 542 544 125.2
C 4 254 14620 112.47 542 544 125.2
D 1 47 309881 2350.99 545 531 131.6
D 2 16 295646 2242.81 545 531 131.6
D 12 233 193089 1463.4 545 531 131.6

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