ASTROSAT CZTI

Data Quality Report

Orbit 41802

Creation date: 2024-06-27T22:32:58.513841
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_052T04_9000005700_41802cztM0_level2.fits modeM0/AS1A12_052T04_9000005700_41802cztM0_level2_quad_clean.evt
Size (bytes)148,417,92038,508,480
Size141.5 MB 36.7 MB
Events in quadrant A1,509,464258,394
Events in quadrant B1,108,717262,164
Events in quadrant C1,441,024240,761
Events in quadrant D1,249,192235,145

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060271
B049201
C057361
D054451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2353190.807480%
B235380.339992%
C23531174.972376%
D2353291.232469%

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 3666 2354 14 14 0.38% 0.59%
B 3666 2353 4 4 0.11% 0.17%
C 3666 2353 113 113 3.08% 4.80%
D 3666 2353 29 29 0.79% 1.23%

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 10 83 256888 4677.8 260 254 54.9
A 15 223 194657 3543.48 260 254 54.9
A 12 189 28226 509.85 260 254 54.9
B 15 35 20645 387.99 260 254 52.6
B 0 186 14013 261.8 260 254 52.6
B 5 255 12650 235.87 260 254 52.6
C 0 10 386070 6434.23 246 246 60.0
C 15 214 94033 1564.04 246 246 60.0
C 13 61 1622 22.94 246 246 60.0
D 13 249 104050 1618.17 252 244 64.2
D 10 199 63649 988.38 252 244 64.2
D 2 249 48801 756.93 252 244 64.2

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