ASTROSAT CZTI

Data Quality Report

Orbit 43454

Creation date: 2024-06-27T22:52:10.631193
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_018T01_9000005874_43454cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43454cztM0_level2_quad_clean.evt
Size (bytes)470,289,60089,864,640
Size448.5 MB 85.7 MB
Events in quadrant A5,370,795573,036
Events in quadrant B3,465,292638,285
Events in quadrant C2,725,844603,747
Events in quadrant D5,393,831498,889

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198292
B0141472
C0118252
D0200482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A582870512.096774%
B58281131.938916%
C582860.102951%
D582769811.978720%

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 7382 5829 639 639 8.66% 10.96%
B 7382 5829 80 80 1.08% 1.37%
C 7382 5829 4 4 0.05% 0.07%
D 7381 5828 684 684 9.27% 11.74%

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 1692634 13752.14 599 586 123.0
A 10 83 679753 5519.94 599 586 123.0
A 15 237 631159 5124.99 599 586 123.0
B 0 229 424289 3527.63 620 604 120.1
B 0 189 331442 2754.58 620 604 120.1
B 3 112 75551 624.01 620 604 120.1
C 15 214 259451 1809.58 610 613 143.0
C 3 233 44307 305.47 610 613 143.0
C 14 254 23321 158.76 610 613 143.0
D 12 233 1484584 10554.99 574 555 140.6
D 1 52 699073 4968.13 574 555 140.6
D 2 16 502454 3569.7 574 555 140.6

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