ASTROSAT CZTI

Data Quality Report

Orbit 27101

Creation date: 2024-06-27T19:36:31.240474
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_231T01_9000003910_27101cztM0_level2.evt modeM0/AS1T03_231T01_9000003910_27101cztM0_level2_quad_clean.evt
Size (bytes)622,431,36085,080,960
Size593.6 MB 81.1 MB
Events in quadrant A4,785,622511,423
Events in quadrant B4,118,838531,917
Events in quadrant C3,776,060514,500
Events in quadrant D5,650,142484,610

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190770
B0169690
C0160140
D0221340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76754646.045603%
B76742623.414126%
C76741782.319520%
D76743214.182955%

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 7905 7676 178 178 2.25% 2.32%
B 7904 7675 55 55 0.70% 0.72%
C 7904 7675 0 0 0.00% 0.00%
D 7904 7675 112 112 1.42% 1.46%

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 14 235 1114359 5835.28 941 919 190.8
A 12 189 28595 145.04 941 919 190.8
A 6 16 11737 56.69 941 919 190.8
B 10 245 255265 1354.55 956 931 187.8
B 3 112 50654 264.82 956 931 187.8
B 10 246 28797 148.41 956 931 187.8
C 14 238 146248 656.8 928 934 221.2
C 15 208 10322 42.43 928 934 221.2
C 13 61 6311 24.3 928 934 221.2
D 13 172 866663 3672.92 914 895 235.7
D 1 52 743111 3148.76 914 895 235.7
D 7 38 259537 1097.26 914 895 235.7

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