ASTROSAT CZTI

Data Quality Report

Orbit 16735

Creation date: 2024-06-27T17:26:59.572947
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_202T01_9000002484_16735cztM0_level2.evt modeM0/AS1A05_202T01_9000002484_16735cztM0_level2_quad_clean.evt
Size (bytes)779,811,840118,195,200
Size743.7 MB 112.7 MB
Events in quadrant A7,252,656777,332
Events in quadrant B3,577,854835,792
Events in quadrant C3,183,465800,064
Events in quadrant D9,152,064699,792

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262583
B0149972
C0138412
D0319372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A668394914.200209%
B66831021.526261%
C6683580.867874%
D6683155823.312883%

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 7509 6685 569 569 7.58% 8.51%
B 7509 6685 20 20 0.27% 0.30%
C 7509 6685 1 1 0.01% 0.01%
D 7509 6685 1156 1156 15.39% 17.29%

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 15 174 2067724 13568.95 760 745 152.3
A 0 23 1948316 12785.08 760 745 152.3
A 10 234 186581 1219.94 760 745 152.3
B 15 35 122194 813.7 801 782 149.2
B 7 220 92993 618.0 801 782 149.2
B 4 216 57837 382.38 801 782 149.2
C 14 238 120915 682.01 763 766 176.2
C 0 207 75344 423.33 763 766 176.2
C 3 233 9969 52.24 763 766 176.2
D 1 52 3588994 21037.95 698 674 170.6
D 2 16 1578642 9251.47 698 674 170.6
D 5 222 625047 3660.64 698 674 170.6

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