ASTROSAT CZTI

Data Quality Report

Orbit 18591

Creation date: 2024-06-27T17:52:04.938365
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_075T05_9000002764_18591cztM0_level2.evt modeM0/AS1A05_075T05_9000002764_18591cztM0_level2_quad_clean.evt
Size (bytes)535,584,96094,052,160
Size510.8 MB 89.7 MB
Events in quadrant A3,183,203605,886
Events in quadrant B3,264,955621,519
Events in quadrant C5,547,017531,640
Events in quadrant D3,742,478594,032

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143981
B0144961
C0212141
D0160151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7096590.831454%
B7097640.901789%
C7097106114.949979%
D7097731.028604%

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 7436 7097 0 0 0.00% 0.00%
B 7437 7098 2 2 0.03% 0.03%
C 7436 7097 683 683 9.19% 9.62%
D 7437 7098 23 23 0.31% 0.32%

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 13 254 11477 63.4 823 805 168.3
A 15 191 7289 38.52 823 805 168.3
A 0 226 7080 37.28 823 805 168.3
B 12 111 19354 117.13 823 802 158.4
B 11 111 17083 102.79 823 802 158.4
B 14 111 14986 89.55 823 802 158.4
C 4 254 2455931 14255.21 734 739 172.2
C 14 238 113184 652.87 734 739 172.2
C 3 233 80311 462.01 734 739 172.2
D 1 52 385567 1970.76 800 775 195.3
D 5 222 112657 573.02 800 775 195.3
D 7 238 104850 533.03 800 775 195.3

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