ASTROSAT CZTI

Data Quality Report

Orbit 24823

Creation date: 2024-06-27T19:10:15.916977
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/AS1A07_045T01_9000003628_24823cztM0_level2.evt modeM0/AS1A07_045T01_9000003628_24823cztM0_level2_quad_clean.evt
Size (bytes)472,956,48077,019,840
Size451.0 MB 73.5 MB
Events in quadrant A3,320,796487,946
Events in quadrant B3,913,122500,712
Events in quadrant C3,450,152461,913
Events in quadrant D3,219,586449,781

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134102
B0153694
C0138642
D0132712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6186400.646621%
B61852694.349232%
C6185741.196443%
D6185130.210186%

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 7481 6187 0 0 0.00% 0.00%
B 7480 6186 205 205 2.74% 3.31%
C 7480 6186 0 0 0.00% 0.00%
D 7480 6186 2 2 0.03% 0.03%

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 8577 45.5 861 848 169.9
A 3 137 7434 38.77 861 848 169.9
A 0 226 7350 38.28 861 848 169.9
B 3 64 589124 3698.48 846 828 159.1
B 12 111 18802 113.0 846 828 159.1
B 11 111 17170 102.74 846 828 159.1
C 14 238 133798 710.72 811 821 187.1
C 7 247 84528 447.39 811 821 187.1
C 2 16 73756 389.81 811 821 187.1
D 8 195 97256 488.34 817 797 197.5
D 1 52 40217 199.57 817 797 197.5
D 2 234 22647 110.62 817 797 197.5

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