ASTROSAT CZTI

Data Quality Report

Orbit 22415

Creation date: 2024-06-27T18:40:51.704984
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_149T02_9000003316_22415cztM0_level2.evt modeM0/AS1T03_149T02_9000003316_22415cztM0_level2_quad_clean.evt
Size (bytes)391,389,12073,753,920
Size373.3 MB 70.3 MB
Events in quadrant A2,591,352468,751
Events in quadrant B2,742,940476,367
Events in quadrant C2,628,650452,644
Events in quadrant D3,503,557437,955

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115701
B0118521
C0115851
D0141791

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5682470.827174%
B5682701.231961%
C5682581.020767%
D56821662.921507%

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 5681 5681 0 0 0.00% 0.00%
B 5682 5682 8 8 0.14% 0.14%
C 5682 5682 0 0 0.00% 0.00%
D 5681 5681 137 137 2.41% 2.41%

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 8070 54.07 671 655 137.1
A 3 137 5972 38.77 671 655 137.1
A 0 226 5646 36.39 671 655 137.1
B 3 64 51303 393.57 669 650 128.7
B 0 197 22392 168.93 669 650 128.7
B 4 173 19911 149.66 669 650 128.7
C 14 238 100399 649.01 648 650 153.7
C 13 61 4415 24.5 648 650 153.7
C 1 16 4231 23.3 648 650 153.7
D 1 52 940346 5950.25 647 628 157.9
D 9 85 41889 261.26 647 628 157.9
D 13 104 31250 193.9 647 628 157.9

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