ASTROSAT CZTI

Data Quality Report

Orbit 16597

Creation date: 2024-06-27T17:24:53.166612
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/AS1C04_009T01_9000002448_16597cztM0_level2.evt modeM0/AS1C04_009T01_9000002448_16597cztM0_level2_quad_clean.evt
Size (bytes)445,855,680119,891,520
Size425.2 MB 114.3 MB
Events in quadrant A3,084,213807,141
Events in quadrant B3,622,762820,740
Events in quadrant C3,125,710787,332
Events in quadrant D3,235,411769,810

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134502
B0148921
C0134681
D0139201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6396721.125704%
B6396921.438399%
C6396470.734834%
D6396781.219512%

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 7412 6398 19 19 0.26% 0.30%
B 7412 6398 27 27 0.36% 0.42%
C 7412 6398 0 0 0.00% 0.00%
D 7412 6398 32 32 0.43% 0.50%

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 9 143 165516 1085.37 755 739 151.8
A 15 174 8769 52.89 755 739 151.8
A 3 1 6832 40.13 755 739 151.8
B 15 35 187218 1310.14 754 733 142.3
B 4 48 116314 812.01 754 733 142.3
B 0 85 113333 791.06 754 733 142.3
C 3 233 157392 928.91 725 730 168.7
C 14 238 110698 652.04 725 730 168.7
C 7 247 15201 85.8 725 730 168.7
D 1 52 229629 1285.01 734 711 178.1
D 10 70 113989 635.87 734 711 178.1
D 2 120 57709 319.95 734 711 178.1

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