ASTROSAT CZTI

Data Quality Report

Orbit 34616

Creation date: 2022-02-22T01:29:37.308313
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/AS1A11_058T02_9000004954_34616cztM0_level2.evt modeM0/AS1A11_058T02_9000004954_34616cztM0_level2_quad_clean.evt
Size (bytes)418,049,28047,975,040
Size398.7 MB 45.8 MB
Events in quadrant A1,911,809316,828
Events in quadrant B2,436,566317,973
Events in quadrant C2,044,300317,408
Events in quadrant D6,012,405234,008

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080912
B096551
C083511
D0204591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3755411.091877%
B37551333.541944%
C3755300.798935%
D3755145638.774967%

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 5038 3756 33 33 0.66% 0.88%
B 5038 3756 86 86 1.71% 2.29%
C 5038 3756 17 17 0.34% 0.45%
D 5038 3756 1170 1170 23.22% 31.15%

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 15 169 161590 1800.8 441 432 89.5
A 10 83 24681 270.96 441 432 89.5
A 13 6 11745 126.41 441 432 89.5
B 5 172 547605 6375.44 433 422 85.8
B 4 232 97528 1131.42 433 422 85.8
B 3 112 20579 234.86 433 422 85.8
C 15 214 156001 1564.99 424 428 99.4
C 14 67 131036 1313.86 424 428 99.4
C 0 10 75631 756.51 424 428 99.4
D 2 249 3152007 32799.34 350 342 96.1
D 8 195 913875 9507.13 350 342 96.1
D 2 207 119486 1239.93 350 342 96.1

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