ASTROSAT CZTI

Data Quality Report

Orbit 43520

Creation date: 2024-06-27T22:52:44.617505
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/AS1A12_018T01_9000005874_43520cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43520cztM0_level2_quad_clean.evt
Size (bytes)2,019,646,080113,653,440
Size1.9 GB 108.4 MB
Events in quadrant A19,603,2241,132,111
Events in quadrant B16,583,9041,162,335
Events in quadrant C29,862,674316,214
Events in quadrant D7,808,0648,295

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0663782
B0573352
C0966923
D0314962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11664467540.080590%
B11665409035.062152%
C116641165499.914266%
D1166411664100.000000%

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 13674 11665 3666 3666 26.81% 31.43%
B 13675 11665 3222 3222 23.56% 27.62%
C 13673 11663 11376 11376 83.20% 97.54%
D 13673 11663 61 61 0.45% 0.52%

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 0 228 4802477 21177.34 1109 1089 226.7
A 14 235 3891912 17161.14 1109 1089 226.7
A 0 175 3248113 14321.55 1109 1089 226.7
B 3 42 5495246 25834.39 1120 1091 212.7
B 3 25 4872234 22904.89 1120 1091 212.7
B 0 200 267447 1252.45 1120 1091 212.7
C 15 158 16838586 201738.38 346 347 83.5
C 5 80 5576698 66810.08 346 347 83.5
C 15 142 2152537 25785.32 346 347 83.5
D 4 216 1333053 66438.64 14 12 20.1
D 4 214 1302932 64937.41 14 12 20.1
D 4 215 719909 35879.6 14 12 20.1

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