ASTROSAT CZTI

Data Quality Report

Orbit 37862

Creation date: 2024-06-27T21:45:25.368962
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/AS1C07_001T12_9000005352_37862cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37862cztM0_level2_quad_clean.evt
Size (bytes)1,280,217,600204,462,720
Size1.2 GB 195.0 MB
Events in quadrant A7,736,9841,320,378
Events in quadrant B8,256,8631,315,519
Events in quadrant C7,855,4751,303,762
Events in quadrant D13,866,0901,172,983

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330565
B0356544
C0332304
D0524054

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15647300.191730%
B156473392.166549%
C15647970.619927%
D15647181311.586886%

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 21167 15651 14 14 0.07% 0.09%
B 21167 15651 213 213 1.01% 1.36%
C 21167 15651 101 101 0.48% 0.65%
D 21167 15651 1598 1598 7.55% 10.21%

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 875889 2534.88 1728 1692 344.9
A 12 189 42206 117.48 1728 1692 344.9
A 9 143 30060 82.26 1728 1692 344.9
B 5 172 890647 2752.27 1703 1658 323.0
B 0 229 189448 581.39 1703 1658 323.0
B 4 81 136883 418.65 1703 1658 323.0
C 15 214 652945 1676.75 1678 1688 388.4
C 14 254 276346 707.14 1678 1688 388.4
C 0 10 213959 546.52 1678 1688 388.4
D 2 249 3574113 9142.78 1607 1560 390.8
D 1 52 1926507 4926.27 1607 1560 390.8
D 10 253 512777 1308.29 1607 1560 390.8

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