ASTROSAT CZTI

Data Quality Report

Orbit 39806

Creation date: 2024-06-27T22:09:09.263134
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/AS1A12_022T01_9000005498_39806cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39806cztM0_level2_quad_clean.evt
Size (bytes)477,959,04078,183,360
Size455.8 MB 74.6 MB
Events in quadrant A2,969,270583,762
Events in quadrant B2,915,212591,419
Events in quadrant C8,556,433285,736
Events in quadrant D2,832,635528,906

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179345526
B0182825798
C04316614342
D0181105611

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269
B02812
C03922
D03618

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016655
B015748
C017358
D016444

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5504571.035610%
B5461981.794543%
C5018240948.007174%
D5500751.363636%

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 13642 5897 25 25 0.18% 0.42%
B 13606 5864 35 35 0.26% 0.60%
C 13583 5504 1942 1942 14.30% 35.28%
D 13612 5869 41 41 0.30% 0.70%

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 403829 3289.96 605 591 122.6
A 13 248 152177 1236.77 605 591 122.6
A 2 79 28719 229.49 605 591 122.6
B 5 172 248149 2144.43 590 574 115.5
B 5 255 136420 1176.67 590 574 115.5
B 4 171 121573 1048.06 590 574 115.5
C 9 187 5331648 54638.47 413 415 97.6
C 15 208 1431494 14666.77 413 415 97.6
C 15 214 165330 1690.17 413 415 97.6
D 2 249 235318 1608.91 585 565 145.9
D 13 249 119000 811.71 585 565 145.9
D 12 227 113339 772.91 585 565 145.9

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