ASTROSAT CZTI

Data Quality Report

Orbit 16626

Creation date: 2024-06-27T17:25:18.405260
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/AS1A05_064T01_9000002450_16626cztM0_level2.evt modeM0/AS1A05_064T01_9000002450_16626cztM0_level2_quad_clean.evt
Size (bytes)554,572,800117,095,040
Size528.9 MB 111.7 MB
Events in quadrant A3,525,939792,280
Events in quadrant B3,343,489803,285
Events in quadrant C4,521,047761,615
Events in quadrant D4,977,918749,121

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147102
B0139631
C0180131
D0191131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62992664.222893%
B6299400.635021%
C6299831.317669%
D62991682.667090%

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 7325 6301 159 159 2.17% 2.52%
B 7325 6301 8 8 0.11% 0.13%
C 7325 6301 0 0 0.00% 0.00%
D 7325 6301 113 113 1.54% 1.79%

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 636236 4250.51 740 726 149.5
A 9 143 38033 249.52 740 726 149.5
A 0 226 6481 38.49 740 726 149.5
B 0 189 165283 1176.94 738 719 139.8
B 15 35 114046 810.5 738 719 139.8
B 0 198 50316 354.71 738 719 139.8
C 3 233 1601165 9678.11 707 710 165.4
C 14 238 108499 651.81 707 710 165.4
C 7 247 54961 328.06 707 710 165.4
D 1 52 1936728 11204.42 717 696 172.8
D 2 33 160009 921.99 717 696 172.8
D 10 70 105144 604.47 717 696 172.8

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