ASTROSAT CZTI

Data Quality Report

Orbit 11722

Creation date: 2024-06-27T16:17:24.237494
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/AS1G08_006T01_9000001728_11722cztM0_level2.evt modeM0/AS1G08_006T01_9000001728_11722cztM0_level2_quad_clean.evt
Size (bytes)488,471,040118,304,640
Size465.8 MB 112.8 MB
Events in quadrant A4,139,557790,720
Events in quadrant B3,478,389818,559
Events in quadrant C2,910,042800,712
Events in quadrant D3,851,401747,028

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164472
B0141881
C0125851
D0153451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6102901.474926%
B61021262.064897%
C6102280.458866%
D61021802.949853%

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 7333 6104 11 11 0.15% 0.18%
B 7333 6104 48 48 0.65% 0.79%
C 7333 6104 0 0 0.00% 0.00%
D 7333 6104 104 104 1.42% 1.70%

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 8 15 933728 6225.98 751 735 149.9
A 1 162 109776 727.64 751 735 149.9
A 1 178 61387 404.74 751 735 149.9
B 4 239 274532 1953.38 758 741 140.2
B 3 64 73572 519.62 758 741 140.2
B 10 245 64839 457.31 758 741 140.2
C 12 4 13063 72.95 743 747 168.8
C 13 61 5474 28.0 743 747 168.8
C 3 202 1862 6.6 743 747 168.8
D 1 52 489623 2900.81 722 703 168.5
D 8 195 214551 1268.78 722 703 168.5
D 4 95 105404 621.2 722 703 168.5

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