ASTROSAT CZTI

Data Quality Report

Orbit 36990

Creation date: 2024-06-27T21:33:57.523192
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/AS1A11_079T01_9000005254_36990cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_36990cztM0_level2_quad_clean.evt
Size (bytes)556,873,92075,709,440
Size531.1 MB 72.2 MB
Events in quadrant A3,162,705467,349
Events in quadrant B4,684,445466,198
Events in quadrant C3,830,175468,998
Events in quadrant D4,749,401438,394

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134123
B0181422
C0153482
D0187352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6470230.355487%
B64702263.493045%
C6470941.452859%
D64701963.029366%

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 9246 6472 11 11 0.12% 0.17%
B 9246 6472 140 140 1.51% 2.16%
C 9246 6472 84 84 0.91% 1.30%
D 9246 6472 128 128 1.38% 1.98%

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 241967 1612.7 739 723 149.6
A 10 255 32223 210.58 739 723 149.6
A 13 6 11275 70.54 739 723 149.6
B 5 184 1179231 8347.79 726 709 141.2
B 4 81 369380 2611.4 726 709 141.2
B 0 221 117043 824.03 726 709 141.2
C 10 49 419909 2479.72 724 730 169.0
C 15 214 275501 1625.45 724 730 169.0
C 0 10 118257 695.25 724 730 169.0
D 1 20 1371403 7707.44 719 697 177.8
D 12 17 341124 1914.21 719 697 177.8
D 2 153 112062 626.2 719 697 177.8

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