ASTROSAT CZTI

Data Quality Report

Orbit 39957

Creation date: 2024-06-27T22:10:36.002441
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_001T01_9000005514_39957cztM0_level2.fits modeM0/AS1C07_001T01_9000005514_39957cztM0_level2_quad_clean.evt
Size (bytes)381,015,36087,707,520
Size363.4 MB 83.6 MB
Events in quadrant A3,093,780602,192
Events in quadrant B2,777,555606,233
Events in quadrant C2,583,240574,102
Events in quadrant D5,224,224490,999

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125912
B0121371
C0112201
D0192951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5462500.915416%
B5462911.666056%
C5462120.219700%
D546256210.289271%

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 7136 5463 39 39 0.55% 0.71%
B 7136 5463 71 71 0.99% 1.30%
C 7136 5463 11 11 0.15% 0.20%
D 7136 5463 595 595 8.34% 10.89%

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 483934 4093.18 582 570 118.1
A 6 10 169774 1432.84 582 570 118.1
A 13 248 152518 1286.71 582 570 118.1
B 5 255 199618 1795.78 577 561 110.8
B 4 170 156380 1405.71 577 561 110.8
B 4 171 52850 471.72 577 561 110.8
C 15 214 229427 1737.0 565 567 131.8
C 0 10 43243 323.9 565 567 131.8
C 9 54 34362 256.5 565 567 131.8
D 2 249 1120217 8283.25 546 528 135.2
D 2 250 738810 5461.67 546 528 135.2
D 12 227 483632 3573.91 546 528 135.2

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