ASTROSAT CZTI

Data Quality Report

Orbit 26616

Creation date: 2024-06-27T19:31:01.727376
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/AS1A09_145T01_9000003848_26616cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26616cztM0_level2_quad_clean.evt
Size (bytes)2,481,935,040407,027,520
Size2.3 GB 388.2 MB
Events in quadrant A14,595,6122,675,888
Events in quadrant B18,492,9202,681,832
Events in quadrant C15,494,0162,583,815
Events in quadrant D24,662,3452,424,752

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610240
B0731080
C0636990
D0935000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A285292050.718567%
B285295942.082092%
C285294811.686004%
D2853024648.636523%

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 32474 28532 44 44 0.14% 0.15%
B 32474 28532 191 191 0.59% 0.67%
C 32474 28532 34 34 0.10% 0.12%
D 32475 28533 2063 2063 6.35% 7.23%

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 0 13 777948 1085.51 3570 3504 713.4
A 13 254 47497 61.66 3570 3504 713.4
A 5 168 46389 60.11 3570 3504 713.4
B 0 189 4209278 6292.29 3538 3465 668.4
B 5 172 96391 139.03 3538 3465 668.4
B 12 111 80109 114.67 3538 3465 668.4
C 3 233 1396357 1750.83 3398 3437 795.6
C 14 238 544738 680.39 3398 3437 795.6
C 15 208 310371 385.8 3398 3437 795.6
D 1 52 7545386 9329.29 3310 3222 808.4
D 7 80 3327858 4112.41 3310 3222 808.4
D 2 250 1129233 1392.82 3310 3222 808.4

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