ASTROSAT CZTI

Data Quality Report

Orbit 26534

Creation date: 2024-06-27T19:30:10.580545
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/AS1A09_095T02_9000003840_26534cztM0_level2.evt modeM0/AS1A09_095T02_9000003840_26534cztM0_level2_quad_clean.evt
Size (bytes)560,450,88098,239,680
Size534.5 MB 93.7 MB
Events in quadrant A3,391,143654,861
Events in quadrant B3,442,257664,121
Events in quadrant C3,415,534630,091
Events in quadrant D6,299,314587,826

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139790
B0141100
C0140380
D0232890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6275681.083665%
B6276891.418101%
C62761171.864245%
D627667110.691523%

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 7505 6275 17 17 0.23% 0.27%
B 7506 6277 5 5 0.07% 0.08%
C 7506 6276 5 5 0.07% 0.08%
D 7506 6277 644 644 8.58% 10.26%

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 13 99884 614.15 819 806 161.3
A 9 130 70078 429.39 819 806 161.3
A 5 168 62719 383.78 819 806 161.3
B 3 112 89328 588.21 816 798 150.5
B 5 172 68702 451.17 816 798 150.5
B 0 186 42192 275.03 816 798 150.5
C 3 233 161447 908.66 775 782 176.8
C 14 238 128499 722.32 775 782 176.8
C 4 254 90220 505.83 775 782 176.8
D 7 80 1910700 10557.96 761 744 180.9
D 1 52 1258638 6953.46 761 744 180.9
D 13 104 144923 797.0 761 744 180.9

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