ASTROSAT CZTI

Data Quality Report

Orbit 36973

Creation date: 2024-06-27T21:33:46.434642
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_36973cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_36973cztM0_level2_quad_clean.evt
Size (bytes)60,808,32013,559,040
Size58.0 MB 12.9 MB
Events in quadrant A380,27888,215
Events in quadrant B604,65588,498
Events in quadrant C374,49189,873
Events in quadrant D430,12585,839

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015962
B022821
C015611
D017601

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71830.417827%
B718283.899721%
C71850.696379%
D718152.089136%

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 718 718 2 2 0.28% 0.28%
B 718 718 25 25 3.48% 3.48%
C 718 718 3 3 0.42% 0.42%
D 718 718 13 13 1.81% 1.81%

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 74542 4141.44 77 75 18.0
A 13 6 3029 164.29 77 75 18.0
A 10 67 2701 146.04 77 75 18.0
B 5 184 198530 11451.45 78 76 17.3
B 0 190 39182 2256.55 78 76 17.3
B 0 221 28734 1653.66 78 76 17.3
C 15 214 35598 1737.11 77 77 20.4
C 0 10 20894 1018.03 77 77 20.4
C 3 233 15081 733.75 77 77 20.4
D 2 250 61527 2969.01 76 73 20.7
D 13 171 36775 1773.18 76 73 20.7
D 2 153 7418 354.86 76 73 20.7

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