ASTROSAT CZTI

Data Quality Report

Orbit 17515

Creation date: 2024-06-27T17:37:30.052084
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/AS1T03_068T01_9000002594_17515cztM0_level2.evt modeM0/AS1T03_068T01_9000002594_17515cztM0_level2_quad_clean.evt
Size (bytes)444,542,400114,981,120
Size423.9 MB 109.7 MB
Events in quadrant A3,240,966788,934
Events in quadrant B3,206,408788,598
Events in quadrant C3,183,572734,347
Events in quadrant D3,402,885730,420

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135022
B0133582
C0132403
D0141402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63091382.187351%
B63091211.917895%
C63081251.981611%
D63082043.233989%

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 7579 6310 10 10 0.13% 0.16%
B 7579 6309 1 1 0.01% 0.02%
C 7578 6309 0 0 0.00% 0.00%
D 7578 6309 81 81 1.07% 1.28%

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 66653 400.78 826 811 164.3
A 0 226 7415 40.2 826 811 164.3
A 12 194 6138 32.43 826 811 164.3
B 12 111 17228 107.7 811 794 152.6
B 11 111 14975 92.93 811 794 152.6
B 14 111 12484 76.61 811 794 152.6
C 14 238 122793 690.84 770 776 176.6
C 3 233 49706 277.04 770 776 176.6
C 5 218 6734 33.73 770 776 176.6
D 13 189 202872 1074.01 791 770 188.2
D 7 38 114807 606.02 791 770 188.2
D 1 52 50566 264.63 791 770 188.2

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