ASTROSAT CZTI

Data Quality Report

Orbit 32951

Creation date: 2024-06-27T20:44:01.867311
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_065T01_9000004750_32951cztM0_level2.evt modeM0/AS1T04_065T01_9000004750_32951cztM0_level2_quad_clean.evt
Size (bytes)603,757,44085,481,280
Size575.8 MB 81.5 MB
Events in quadrant A2,246,029613,579
Events in quadrant B3,303,397616,789
Events in quadrant C2,309,536617,264
Events in quadrant D10,089,768391,696

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100561
B0129651
C0101951
D0333971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495770.141214%
B49572795.628404%
C495770.141214%
D4957291358.765382%

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 4957 4957 2 2 0.04% 0.04%
B 4957 4957 191 191 3.85% 3.85%
C 4957 4957 8 8 0.16% 0.16%
D 4957 4957 2736 2736 55.19% 55.19%

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 0 191 40503 347.3 565 553 115.0
A 14 238 13362 111.35 565 553 115.0
A 13 254 9044 73.82 565 553 115.0
B 5 172 870038 8135.55 558 545 106.9
B 0 199 58118 538.69 558 545 106.9
B 0 229 28444 261.04 558 545 106.9
C 0 10 47288 362.57 553 557 128.9
C 3 233 26816 203.73 553 557 128.9
C 1 241 20163 152.11 553 557 128.9
D 12 227 5923422 56639.1 404 394 104.6
D 8 195 804398 7688.31 404 394 104.6
D 12 17 552574 5280.23 404 394 104.6

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