ASTROSAT CZTI

Data Quality Report

Orbit 24919

Creation date: 2024-06-27T19:11:27.027119
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/AS1T03_205T01_9000003652_24919cztM0_level2.evt modeM0/AS1T03_205T01_9000003652_24919cztM0_level2_quad_clean.evt
Size (bytes)837,596,160236,571,840
Size798.8 MB 225.6 MB
Events in quadrant A6,282,9521,600,447
Events in quadrant B6,060,3911,618,153
Events in quadrant C5,888,6981,542,827
Events in quadrant D6,280,8351,533,255

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270172
B0261772
C0257982
D0271807

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126041381.094891%
B126051140.904403%
C126051421.126537%
D12604990.785465%

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 13969 12606 25 25 0.18% 0.20%
B 13970 12607 6 6 0.04% 0.05%
C 13970 12607 5 5 0.04% 0.04%
D 13969 12606 32 32 0.23% 0.25%

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 15 223 396878 1333.96 1493 1460 296.4
A 15 239 102467 340.75 1493 1460 296.4
A 13 254 19024 59.25 1493 1460 296.4
B 0 189 131595 462.9 1481 1445 281.2
B 0 229 35058 119.55 1481 1445 281.2
B 12 111 34701 118.28 1481 1445 281.2
C 14 238 226859 683.75 1424 1433 329.7
C 2 16 76112 226.51 1424 1433 329.7
C 7 247 37064 108.07 1424 1433 329.7
D 1 52 243542 693.39 1447 1404 349.2
D 2 244 238664 679.42 1447 1404 349.2
D 8 195 235397 670.06 1447 1404 349.2

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