ASTROSAT CZTI

Data Quality Report

Orbit 21029

Creation date: 2024-06-27T18:22:41.519827
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/AS1A05_088T02_9000003106_21029cztM0_level2.evt modeM0/AS1A05_088T02_9000003106_21029cztM0_level2_quad_clean.evt
Size (bytes)337,011,84065,828,160
Size321.4 MB 62.8 MB
Events in quadrant A2,360,040418,837
Events in quadrant B2,640,713427,284
Events in quadrant C2,402,071404,987
Events in quadrant D2,462,821391,484

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103001
B0110831
C0103291
D0107791

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A500070.140000%
B5000450.900000%
C5000230.460000%
D5000180.360000%

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 6220 5001 0 0 0.00% 0.00%
B 6220 5001 13 13 0.21% 0.26%
C 6220 5001 0 0 0.00% 0.00%
D 6220 5001 9 9 0.14% 0.18%

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 6447 46.71 612 601 125.2
A 0 226 5215 36.86 612 601 125.2
A 3 137 4843 33.89 612 601 125.2
B 7 220 64613 552.69 615 599 115.8
B 0 189 53119 453.45 615 599 115.8
B 3 64 43639 371.6 615 599 115.8
C 14 238 93605 664.34 592 595 140.0
C 13 61 4216 25.86 592 595 140.0
C 14 111 1398 5.74 592 595 140.0
D 1 239 68633 476.25 591 574 142.9
D 1 52 59783 414.32 591 574 142.9
D 7 38 25656 175.51 591 574 142.9

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