ASTROSAT CZTI

Data Quality Report

Orbit 21294

Creation date: 2024-06-27T18:26:02.404220
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/AS1T03_140T01_9000003142_21294cztM0_level2.evt modeM0/AS1T03_140T01_9000003142_21294cztM0_level2_quad_clean.evt
Size (bytes)493,565,76090,288,000
Size470.7 MB 86.1 MB
Events in quadrant A3,179,455588,363
Events in quadrant B3,353,817595,023
Events in quadrant C3,284,079569,412
Events in quadrant D4,701,434540,330

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134922
B0140132
C0138902
D0183813

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6322510.806707%
B6322781.233787%
C63221081.708320%
D63212634.160734%

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 7447 6322 3 3 0.04% 0.05%
B 7447 6322 11 11 0.15% 0.17%
C 7447 6323 0 0 0.00% 0.00%
D 7446 6322 255 255 3.42% 4.03%

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 9 143 52634 318.82 804 786 162.6
A 12 96 18340 107.94 804 786 162.6
A 13 254 9360 52.72 804 786 162.6
B 3 64 77448 503.02 799 781 152.4
B 0 190 74204 481.74 799 781 152.4
B 0 245 20643 130.32 799 781 152.4
C 3 233 187328 1052.64 758 764 177.2
C 14 238 120580 676.03 758 764 177.2
C 0 10 21832 118.87 758 764 177.2
D 7 38 1371584 7351.81 761 740 186.5
D 1 52 146196 780.08 761 740 186.5
D 12 235 74512 395.64 761 740 186.5

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