ASTROSAT CZTI

Data Quality Report

Orbit 17040

Creation date: 2024-06-27T17:31:12.893783
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_038T01_9000002530_17040cztM0_level2.evt modeM0/AS1T03_038T01_9000002530_17040cztM0_level2_quad_clean.evt
Size (bytes)527,140,800116,089,920
Size502.7 MB 110.7 MB
Events in quadrant A3,749,209761,770
Events in quadrant B3,497,342783,108
Events in quadrant C4,457,530732,516
Events in quadrant D3,758,518723,918

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162231
B0153681
C0181851
D0163151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73962593.501893%
B73971712.311748%
C73972583.487901%
D73972443.298635%

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 7542 7399 79 79 1.05% 1.07%
B 7543 7400 1 1 0.01% 0.01%
C 7543 7400 0 0 0.00% 0.00%
D 7543 7400 68 68 0.90% 0.92%

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 4 2 257944 1454.17 871 850 176.8
A 15 174 73428 410.51 871 850 176.8
A 0 254 53819 299.6 871 850 176.8
B 0 229 35945 208.9 870 847 168.0
B 0 189 20780 118.64 870 847 168.0
B 12 111 20004 114.02 870 847 168.0
C 3 233 1113012 5771.21 822 823 192.7
C 14 238 126463 651.95 822 823 192.7
C 9 160 6839 31.22 822 823 192.7
D 1 52 280233 1372.53 843 816 203.6
D 10 70 145124 708.86 843 816 203.6
D 12 235 93304 454.31 843 816 203.6

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