ASTROSAT CZTI

Data Quality Report

Orbit 39949

Creation date: 2024-06-27T22:10:30.459815
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_39949cztM0_level2.fits modeM0/AS1C07_001T01_9000005514_39949cztM0_level2_quad_clean.evt
Size (bytes)354,326,40091,350,720
Size337.9 MB 87.1 MB
Events in quadrant A2,795,351617,937
Events in quadrant B3,218,531624,051
Events in quadrant C2,599,107611,698
Events in quadrant D4,062,843517,467

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120823
B0137402
C0115112
D0162852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5648110.194759%
B56481332.354816%
C564860.106232%
D56485209.206799%

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 7351 5649 5 5 0.07% 0.09%
B 7351 5649 105 105 1.43% 1.86%
C 7351 5649 4 4 0.05% 0.07%
D 7351 5649 530 530 7.21% 9.38%

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 459127 3779.74 592 581 121.3
A 7 3 9259 71.53 592 581 121.3
A 7 192 8013 61.26 592 581 121.3
B 5 255 735025 6408.41 589 574 114.6
B 4 171 113884 988.68 589 574 114.6
B 0 183 23131 196.82 589 574 114.6
C 15 214 235180 1739.54 581 582 134.9
C 9 54 58081 426.35 581 582 134.9
C 0 10 18080 129.75 581 582 134.9
D 12 227 774614 5746.24 554 538 134.7
D 13 171 595232 4414.63 554 538 134.7
D 1 47 218980 1621.57 554 538 134.7

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