ASTROSAT CZTI

Data Quality Report

Orbit 43981

Creation date: 2024-06-27T22:57:55.797649
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/AS1A13_065T06_9000005924_43981cztM0_level2.fits modeM0/AS1A13_065T06_9000005924_43981cztM0_level2_quad_clean.evt
Size (bytes)781,018,56087,756,480
Size744.8 MB 83.7 MB
Events in quadrant A14,787,14029,850
Events in quadrant B4,595,716772,552
Events in quadrant C3,153,492785,641
Events in quadrant D5,854,417603,265

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0484822
B0181062
C0139122
D0220282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6681645696.632241%
B66815898.816046%
C6681190.284389%
D6681102015.267176%

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 7885 6681 4878 4878 61.86% 73.01%
B 7886 6682 421 421 5.34% 6.30%
C 7886 6682 6 6 0.08% 0.09%
D 7886 6682 896 896 11.36% 13.41%

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 15 223 13760881 483126.39 127 124 28.5
A 14 238 213183 7480.29 127 124 28.5
A 10 83 209564 7353.23 127 124 28.5
B 5 172 1168060 7775.02 762 739 150.1
B 4 171 348977 2319.46 762 739 150.1
B 12 111 18566 118.74 762 739 150.1
C 14 254 59351 319.71 778 784 183.2
C 2 14 21711 114.24 778 784 183.2
C 15 157 21197 111.43 778 784 183.2
D 5 235 2200827 12300.67 703 681 178.9
D 1 52 403737 2253.42 703 681 178.9
D 4 222 141440 786.96 703 681 178.9

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