ASTROSAT CZTI

Data Quality Report

Orbit 32743

Creation date: 2024-06-27T20:41:30.455027
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/AS1A10_057T04_9000004728_32743cztM0_level2.evt modeM0/AS1A10_057T04_9000004728_32743cztM0_level2_quad_clean.evt
Size (bytes)611,392,32066,677,760
Size583.1 MB 63.6 MB
Events in quadrant A4,672,794413,833
Events in quadrant B6,009,237430,644
Events in quadrant C3,291,844425,498
Events in quadrant D4,201,517395,494

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171612
B0211231
C0131521
D0160201

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A503764312.765535%
B5037153430.454636%
C5037631.250744%
D50371693.355172%

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 7161 5038 508 508 7.09% 10.08%
B 7161 5038 1133 1133 15.82% 22.49%
C 7161 5038 51 51 0.71% 1.01%
D 7161 5038 173 173 2.42% 3.43%

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 15 249 2184020 18289.13 602 593 119.4
A 12 16 46449 384.11 602 593 119.4
A 15 237 43356 358.2 602 593 119.4
B 12 1 3022269 31233.55 516 506 96.7
B 15 36 360769 3723.75 516 506 96.7
B 5 172 287792 2969.45 516 506 96.7
C 8 229 796216 5812.39 596 602 136.9
C 0 10 60442 437.16 596 602 136.9
C 9 54 33919 243.4 596 602 136.9
D 8 195 471476 3305.96 590 576 142.4
D 2 250 336779 2360.32 590 576 142.4
D 1 47 201031 1407.3 590 576 142.4

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