ASTROSAT CZTI

Data Quality Report

Orbit 18122

Creation date: 2024-06-27T17:45:14.156349
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_019T01_9000002688_18122cztM0_level2.evt modeM0/AS1A05_019T01_9000002688_18122cztM0_level2_quad_clean.evt
Size (bytes)487,601,280107,429,760
Size465.0 MB 102.5 MB
Events in quadrant A3,038,437746,561
Events in quadrant B3,199,756747,659
Events in quadrant C2,961,823687,412
Events in quadrant D5,180,566673,524

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124601
B0128341
C0121341
D0190951

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56991202.105633%
B57001362.385965%
C57001362.385965%
D57002544.456140%

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 6999 5699 4 4 0.06% 0.07%
B 7000 5700 13 13 0.19% 0.23%
C 7000 5701 0 0 0.00% 0.00%
D 7000 5701 218 218 3.11% 3.82%

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 49420 313.68 777 763 155.1
A 0 226 6842 39.19 777 763 155.1
A 12 194 5797 32.45 777 763 155.1
B 5 172 53966 368.63 765 748 144.4
B 7 220 47837 326.18 765 748 144.4
B 0 189 44658 304.16 765 748 144.4
C 14 238 114573 681.19 719 724 167.1
C 3 233 29872 174.4 719 724 167.1
C 5 218 5122 26.31 719 724 167.1
D 7 238 1765078 9870.9 741 720 178.7
D 11 176 288578 1610.45 741 720 178.7
D 13 104 160986 896.63 741 720 178.7

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