ASTROSAT CZTI

Data Quality Report

Orbit 20210706_T04_019T01_9000004516_level2

Creation date: 2021-07-08T10:15:56.033346
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/AS1T04_019T01_9000004516cztM0_level2_bc.evt modeM0/AS1T04_019T01_9000004516cztM0_level2_quad_clean.evt
Size (bytes)2,627,588,160659,116,800
Size2.4 GB 628.6 MB
Events in quadrant A10,471,0734,245,637
Events in quadrant B25,348,7614,211,264
Events in quadrant C11,491,8244,064,244
Events in quadrant D28,843,2843,985,400

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010280
B010280
C010280
D010280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01048630
B01536310
C01103400
D01622700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A503646911.372012%
B5036415153.008101%
C5036415773.131205%
D5036415553.087523%

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 55024 50365 0 0 0.00% 0.00%
B 55023 50362 0 0 0.00% 0.00%
C 55023 50363 12 12 0.02% 0.02%
D 55023 50361 276 276 0.50% 0.55%

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 76907 126.76 2707 2659 585.8
A 5 16 29464 45.76 2707 2659 585.8
A 0 226 16739 24.04 2707 2659 585.8
B 6 159 14727510 28292.92 2699 2626 520.4
B 0 190 158753 299.99 2699 2626 520.4
B 0 230 97576 182.44 2699 2626 520.4
C 3 233 414080 671.99 2599 2587 612.3
C 0 10 399182 647.66 2599 2587 612.3
C 10 22 392579 636.88 2599 2587 612.3
D 8 195 18079849 29895.88 2634 2565 604.7
D 2 72 297224 487.3 2634 2565 604.7
D 11 176 199988 326.49 2634 2565 604.7

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