ASTROSAT CZTI

Data Quality Report

Orbit 01269

Creation date: 2024-06-27T14:10:08.312156
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/AS1G04_011T02_9000000226_01269cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01269cztM0_level2_quad_clean.evt
Size (bytes)1,352,113,92090,466,560
Size1.3 GB 86.3 MB
Events in quadrant A7,461,255660,288
Events in quadrant B8,553,946645,750
Events in quadrant C7,935,518629,655
Events in quadrant D16,573,210353,086

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267432
B0299721
C0280911
D0544471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6431160.248795%
B6431330.513139%
C6431270.419841%
D6431414964.515627%

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 7481 6431 129 129 1.72% 2.01%
B 7480 6430 427 427 5.71% 6.64%
C 7481 6432 265 265 3.54% 4.12%
D 7480 6430 4749 4749 63.49% 73.86%

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 8 14 26468 52.25 1935 1950 469.3
A 13 235 7042 10.85 1935 1950 469.3
A 3 111 5951 8.53 1935 1950 469.3
B 8 4 593529 1228.93 2042 2049 481.3
B 6 53 91302 185.44 2042 2049 481.3
B 3 204 33555 65.46 2042 2049 481.3
C 8 208 480969 946.35 1819 1883 506.2
C 15 241 293521 576.08 1819 1883 506.2
C 3 111 24564 44.8 1819 1883 506.2
D 13 169 11009456 31662.94 1128 1167 347.7
D 10 84 1258483 3616.39 1128 1167 347.7
D 12 22 51104 143.63 1128 1167 347.7

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