ASTROSAT CZTI

Data Quality Report

Orbit 19451

Creation date: 2024-06-27T18:03:02.539634
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/AS1A05_221T01_9000002888_19451cztM0_level2.evt modeM0/AS1A05_221T01_9000002888_19451cztM0_level2_quad_clean.evt
Size (bytes)2,132,729,280346,965,120
Size2.0 GB 330.9 MB
Events in quadrant A13,638,1022,179,163
Events in quadrant B14,198,0872,205,909
Events in quadrant C13,974,8432,141,535
Events in quadrant D20,874,9002,041,714

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05720
B05720
C05720
D05720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0581955
B0598985
C0590755
D0806705

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A282311480.524246%
B282312530.896178%
C282312841.005986%
D2823217816.308444%

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 32506 28233 15 15 0.05% 0.05%
B 32506 28234 50 50 0.15% 0.18%
C 32506 28234 10 10 0.03% 0.04%
D 32507 28234 1496 1496 4.60% 5.30%

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 11 29 138240 193.66 3465 3390 696.3
A 12 96 89755 124.03 3465 3390 696.3
A 3 1 39796 52.28 3465 3390 696.3
B 7 220 260883 397.04 3435 3353 648.6
B 0 198 117808 176.46 3435 3353 648.6
B 0 197 99734 148.59 3435 3353 648.6
C 14 238 516129 662.29 3326 3356 774.2
C 9 221 353902 452.76 3326 3356 774.2
C 0 207 116122 145.65 3326 3356 774.2
D 7 238 6618773 8164.27 3313 3216 810.3
D 1 52 1199863 1476.78 3313 3216 810.3
D 5 222 249742 304.24 3313 3216 810.3

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