ASTROSAT CZTI

Data Quality Report

Orbit 24562

Creation date: 2024-06-27T19:07:18.058287
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_183T01_9000003610_24562cztM0_level2.evt modeM0/AS1T03_183T01_9000003610_24562cztM0_level2_quad_clean.evt
Size (bytes)558,149,760129,110,400
Size532.3 MB 123.1 MB
Events in quadrant A3,069,111926,654
Events in quadrant B3,127,308932,158
Events in quadrant C3,051,301873,089
Events in quadrant D7,260,828770,692

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128621
B0129982
C0127791
D0256021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5829741.269514%
B5829831.423915%
C58291081.852805%
D5829122420.998456%

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 7104 5830 0 0 0.00% 0.00%
B 7104 5830 2 2 0.03% 0.03%
C 7104 5830 0 0 0.00% 0.00%
D 7104 5830 901 901 12.68% 15.45%

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 9970 58.86 795 782 156.1
A 0 226 6980 39.71 795 782 156.1
A 3 137 6480 36.5 795 782 156.1
B 0 190 27672 185.93 782 766 144.7
B 3 64 22456 149.89 782 766 144.7
B 12 111 16426 108.22 782 766 144.7
C 14 238 121982 725.71 740 747 167.1
C 2 16 22402 129.63 740 747 167.1
C 3 233 13190 74.48 740 747 167.1
D 8 195 2131347 12812.15 698 679 166.3
D 12 218 1801124 10826.45 698 679 166.3
D 1 52 560783 3368.02 698 679 166.3

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