ASTROSAT CZTI

Data Quality Report

Orbit 41997

Creation date: 2024-06-27T22:35:31.742444
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/AS1T05_132T01_9000005730_41997cztM0_level2.fits modeM0/AS1T05_132T01_9000005730_41997cztM0_level2_quad_clean.evt
Size (bytes)310,351,68087,148,800
Size296.0 MB 83.1 MB
Events in quadrant A2,718,766584,666
Events in quadrant B2,323,706605,874
Events in quadrant C2,320,017577,288
Events in quadrant D3,740,427524,082

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108972
B0102342
C099322
D0145812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4946120.242620%
B494690.181965%
C494620.040437%
D4946511.031136%

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 7099 4947 2 2 0.03% 0.04%
B 7099 4947 3 3 0.04% 0.06%
C 7099 4947 0 0 0.00% 0.00%
D 7099 4947 45 45 0.63% 0.91%

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 10 83 529623 4660.9 558 548 113.5
A 2 79 11202 93.86 558 548 113.5
A 13 6 7433 60.65 558 548 113.5
B 0 190 61914 582.66 554 537 105.3
B 5 255 50735 476.54 554 537 105.3
B 4 81 20030 185.05 554 537 105.3
C 15 214 208382 1661.77 539 542 125.1
C 8 229 8878 66.65 539 542 125.1
C 13 61 3726 25.46 539 542 125.1
D 1 52 942120 7206.81 535 522 130.7
D 12 217 350873 2681.52 535 522 130.7
D 13 249 154419 1177.9 535 522 130.7

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