ASTROSAT CZTI

Data Quality Report

Orbit 20263

Creation date: 2024-06-27T18:13:11.643941
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_175T01_9000003004_20263cztM0_level2.evt modeM0/AS1A05_175T01_9000003004_20263cztM0_level2_quad_clean.evt
Size (bytes)570,536,64078,105,600
Size544.1 MB 74.5 MB
Events in quadrant A5,397,515482,155
Events in quadrant B3,453,317507,242
Events in quadrant C3,358,607476,613
Events in quadrant D4,631,716448,479

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200778
B0140742
C0137732
D0179132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A645477111.946080%
B6454620.960645%
C6454620.960645%
D64543896.027270%

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 7739 6455 533 533 6.89% 8.26%
B 7739 6455 6 6 0.08% 0.09%
C 7739 6455 1 1 0.01% 0.02%
D 7739 6455 328 328 4.24% 5.08%

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 14 238 2233698 13641.46 816 801 163.7
A 4 2 10904 61.72 816 801 163.7
A 8 205 8724 48.4 816 801 163.7
B 7 220 57006 351.87 853 834 159.6
B 12 111 18702 111.92 853 834 159.6
B 11 111 16618 98.87 853 834 159.6
C 14 238 129105 682.74 813 823 187.9
C 5 4 26221 135.17 813 823 187.9
C 0 207 18698 95.13 813 823 187.9
D 1 52 1101371 5756.06 797 775 191.2
D 11 176 390867 2040.16 797 775 191.2
D 2 120 52887 272.54 797 775 191.2

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