ASTROSAT CZTI

Data Quality Report

Orbit 37917

Creation date: 2024-06-27T21:46:07.607819
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/AS1T05_059T01_9000005354_37917cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37917cztM0_level2_quad_clean.evt
Size (bytes)469,728,00070,830,720
Size448.0 MB 67.5 MB
Events in quadrant A3,143,644449,363
Events in quadrant B3,454,316448,329
Events in quadrant C3,009,020441,105
Events in quadrant D4,218,265393,251

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130233
B0140672
C0126562
D0167062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5902280.474415%
B59021202.033209%
C5902490.830227%
D59022934.964419%

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 7185 5903 14 14 0.19% 0.24%
B 7185 5903 71 71 0.99% 1.20%
C 7185 5903 34 34 0.47% 0.58%
D 7185 5903 306 306 4.26% 5.18%

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 10 83 404995 3014.71 660 646 134.1
A 13 248 112225 831.9 660 646 134.1
A 13 6 22884 165.8 660 646 134.1
B 0 229 260977 2062.84 653 637 126.2
B 5 172 251804 1990.16 653 637 126.2
B 4 171 150607 1188.31 653 637 126.2
C 15 214 246650 1629.62 640 645 151.0
C 0 10 150218 990.82 640 645 151.0
C 14 254 64609 423.72 640 645 151.0
D 12 227 676238 4279.21 632 611 157.9
D 2 249 384441 2431.06 632 611 157.9
D 1 52 342407 2164.83 632 611 157.9

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