ASTROSAT CZTI

Data Quality Report

Orbit 44491

Creation date: 2024-06-27T23:03:50.805147
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/AS1A13_072T03_9000006000_44491cztM0_level2.fits modeM0/AS1A13_072T03_9000006000_44491cztM0_level2_quad_clean.evt
Size (bytes)1,553,610,240389,571,840
Size1.4 GB 371.5 MB
Events in quadrant A16,714,0312,620,682
Events in quadrant B11,773,5302,707,756
Events in quadrant C11,716,1822,588,930
Events in quadrant D15,510,3932,280,632

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04740
B04740
C04740
D04740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0702295
B0507225
C0504535
D0621315

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A232205552.390181%
B232216472.786271%
C232212711.167047%
D2322113135.654365%

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 28535 23226 11 11 0.04% 0.05%
B 28536 23227 212 212 0.74% 0.91%
C 28536 23227 46 46 0.16% 0.20%
D 28536 23227 856 856 3.00% 3.69%

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 6141697 10972.91 2718 2658 559.5
A 0 243 33100 54.41 2718 2658 559.5
A 3 137 30403 49.59 2718 2658 559.5
B 5 172 709481 1347.91 2692 2602 524.4
B 0 168 169745 318.72 2692 2602 524.4
B 5 255 146294 274.0 2692 2602 524.4
C 3 233 757523 1212.12 2667 2689 622.7
C 14 254 388028 618.78 2667 2689 622.7
C 15 208 47268 71.58 2667 2689 622.7
D 2 249 2714575 4126.87 2621 2544 657.2
D 13 249 773155 1172.63 2621 2544 657.2
D 1 52 585255 886.71 2621 2544 657.2

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