ASTROSAT CZTI

Data Quality Report

Orbit 27811

Creation date: 2024-06-27T19:44:42.847126
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/AS1A10_016T02_9000004018_27811cztM0_level2.evt modeM0/AS1A10_016T02_9000004018_27811cztM0_level2_quad_clean.evt
Size (bytes)477,069,12069,468,480
Size455.0 MB 66.3 MB
Events in quadrant A2,657,700462,979
Events in quadrant B5,487,833389,593
Events in quadrant C2,731,607424,249
Events in quadrant D3,186,880430,881

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115320
B0202080
C0116730
D0132860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5647170.301045%
B5648118420.963173%
C5648601.062323%
D5648811.434136%

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 6082 5648 0 0 0.00% 0.00%
B 6083 5648 946 946 15.55% 16.75%
C 6083 5649 3 3 0.05% 0.05%
D 6083 5649 52 52 0.85% 0.92%

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 13 254 8147 53.46 689 674 139.8
A 3 137 6694 43.07 689 674 139.8
A 0 226 5738 36.23 689 674 139.8
B 10 245 3023012 24820.3 617 599 121.8
B 3 64 36739 296.78 617 599 121.8
B 12 111 15113 119.19 617 599 121.8
C 14 238 104621 668.42 653 653 155.5
C 3 233 69466 442.41 653 653 155.5
C 4 175 7940 46.85 653 653 155.5
D 1 52 692186 4384.89 659 642 157.7
D 2 234 24629 152.09 659 642 157.7
D 14 226 6250 35.56 659 642 157.7

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