ASTROSAT CZTI

Data Quality Report

Orbit 17355

Creation date: 2024-06-27T17:35:24.679797
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/AS1A05_165T12_9000002562_17355cztM0_level2.evt modeM0/AS1A05_165T12_9000002562_17355cztM0_level2_quad_clean.evt
Size (bytes)508,608,00092,704,320
Size485.0 MB 88.4 MB
Events in quadrant A3,435,410608,056
Events in quadrant B3,536,571618,559
Events in quadrant C3,435,588575,206
Events in quadrant D4,554,557552,270

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143012
B0146432
C0142722
D0178872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64981081.662050%
B64981291.985226%
C64981512.323792%
D64983144.832256%

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 7798 6499 1 1 0.01% 0.02%
B 7798 6499 2 2 0.03% 0.03%
C 7798 6499 0 0 0.00% 0.00%
D 7798 6499 213 213 2.73% 3.28%

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 0 226 8166 41.25 890 876 176.7
A 15 174 7601 38.05 890 876 176.7
A 12 194 6491 31.77 890 876 176.7
B 4 216 47660 284.53 888 868 164.5
B 12 111 18621 107.95 888 868 164.5
B 11 111 15886 91.32 888 868 164.5
C 14 238 134230 697.09 836 845 191.3
C 3 233 40415 206.8 836 845 191.3
C 13 61 6086 27.39 836 845 191.3
D 1 52 765309 3773.55 839 815 202.6
D 13 232 171353 841.77 839 815 202.6
D 13 189 126542 620.59 839 815 202.6

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