ASTROSAT CZTI

Data Quality Report

Orbit 26217

Creation date: 2024-06-27T19:26:13.919380
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/AS1C05_019T04_9000003788_26217cztM0_level2.evt modeM0/AS1C05_019T04_9000003788_26217cztM0_level2_quad_clean.evt
Size (bytes)429,822,720127,419,840
Size409.9 MB 121.5 MB
Events in quadrant A3,082,909863,371
Events in quadrant B3,113,832876,341
Events in quadrant C3,182,253829,789
Events in quadrant D3,190,425830,845

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134680
B0135120
C0137510
D0139500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6582981.488909%
B6583921.397539%
C65831081.640589%
D6583721.093726%

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 7197 6583 2 2 0.03% 0.03%
B 7198 6584 4 4 0.06% 0.06%
C 7198 6584 9 9 0.13% 0.14%
D 7198 6584 15 15 0.21% 0.23%

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 0 13 42545 264.24 788 772 158.1
A 13 254 9823 57.25 788 772 158.1
A 3 137 7159 40.4 788 772 158.1
B 0 190 30685 202.05 782 763 148.1
B 5 172 27216 178.62 782 763 148.1
B 12 111 17715 114.47 782 763 148.1
C 14 238 122238 697.75 747 749 174.1
C 3 233 119362 681.23 747 749 174.1
C 2 16 29683 166.18 747 749 174.1
D 1 52 186748 1023.15 762 744 181.8
D 12 233 43600 235.74 762 744 181.8
D 2 234 27692 148.23 762 744 181.8

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