ASTROSAT CZTI

Data Quality Report

Orbit 13020

Creation date: 2024-06-27T16:35:09.428744
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/AS1A04_216T01_9000001916_13020cztM0_level2.evt modeM0/AS1A04_216T01_9000001916_13020cztM0_level2_quad_clean.evt
Size (bytes)964,284,480164,721,600
Size919.6 MB 157.1 MB
Events in quadrant A6,040,2151,096,938
Events in quadrant B9,717,676936,212
Events in quadrant C5,420,8861,086,144
Events in quadrant D7,199,4941,026,147

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259913
B0369062
C0249862
D0303032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121861961.608403%
B12186213017.479074%
C12186840.689316%
D121864673.832267%

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 12762 12189 12 12 0.09% 0.10%
B 12762 12189 1386 1386 10.86% 11.37%
C 12762 12189 6 6 0.05% 0.05%
D 12762 12189 276 276 2.16% 2.26%

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 12 189 221291 773.65 1408 1375 284.3
A 15 223 125930 438.17 1408 1375 284.3
A 15 174 84924 293.92 1408 1375 284.3
B 4 239 4267882 17673.67 1267 1233 241.4
B 3 64 203581 838.18 1267 1233 241.4
B 0 85 115914 475.04 1267 1233 241.4
C 14 234 41709 126.75 1377 1382 318.2
C 13 61 10207 27.74 1377 1382 318.2
C 12 4 10077 27.33 1377 1382 318.2
D 1 52 1872536 5773.58 1348 1307 324.1
D 8 195 103316 314.74 1348 1307 324.1
D 14 34 82565 250.72 1348 1307 324.1

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