ASTROSAT CZTI

Data Quality Report

Orbit 20240916_A13_037T01_9000006432_level2

Creation date: 2024-09-20T12:07:32.430327
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/AS1A13_037T01_9000006432cztM0_level2.fits modeM0/AS1A13_037T01_9000006432cztM0_level2_quad_clean.evt
Size (bytes)490,939,200279,469,440
Size468.2 MB 266.5 MB
Events in quadrant A2,808,6301,155,879
Events in quadrant B2,805,3501,194,374
Events in quadrant C2,893,6901,142,577
Events in quadrant D2,414,0321,024,374

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02149830
B01242660
C01175710
D01573000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011620
B011620
C011620
D011620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5747321363.716528%
B5747315202.644720%
C574735440.946531%
D5747345787.965479%

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 61482 57472 0 0 0.00% 0.00%
B 61483 57465 0 0 0.00% 0.00%
C 61483 57469 0 0 0.00% 0.00%
D 61483 57429 0 0 0.00% 0.00%

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 7 110 2293 8.37 732 681 192.5
A 15 236 2246 8.13 732 681 192.5
A 14 95 2118 7.46 732 681 192.5
B 2 9 2665 13.29 737 697 148.0
B 2 8 2109 9.54 737 697 148.0
B 3 17 2081 9.35 737 697 148.0
C 1 81 2159 7.13 765 706 203.9
C 1 80 2086 6.77 765 706 203.9
C 3 202 2066 6.67 765 706 203.9
D 4 12 1750 5.72 690 621 197.3
D 10 189 1732 5.63 690 621 197.3
D 3 31 1714 5.54 690 621 197.3

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