ASTROSAT CZTI

Data Quality Report

Orbit 50810

Creation date: 2025-02-18T18:13:25.232605
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/AS1C07_001T01_9000006450_50810cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50810cztM0_level2_quad_clean.evt
Size (bytes)520,398,72099,501,120
Size496.3 MB 94.9 MB
Events in quadrant A4,391,109646,885
Events in quadrant B3,763,136723,332
Events in quadrant C4,230,330627,075
Events in quadrant D6,341,737533,651

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176372
B0159362
C0173152
D0235562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69153605.206074%
B69161562.255639%
C69162193.166570%
D691688312.767496%

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 7915 6915 262 262 3.31% 3.79%
B 7916 6916 79 79 1.00% 1.14%
C 7915 6915 175 175 2.21% 2.53%
D 7916 6916 763 763 9.64% 11.03%

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 9 13 291352 1595.62 739 721 182.1
A 6 161 159018 869.08 739 721 182.1
A 3 114 152934 835.68 739 721 182.1
B 8 128 277240 1752.69 740 715 157.8
B 4 206 225263 1423.24 740 715 157.8
B 7 252 84395 530.39 740 715 157.8
C 5 10 448395 2251.83 719 710 198.8
C 13 3 210539 1055.43 719 710 198.8
C 1 60 180055 902.1 719 710 198.8
D 2 216 1342498 6800.35 687 662 197.3
D 15 108 300657 1520.36 687 662 197.3
D 2 249 286463 1448.42 687 662 197.3

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