ASTROSAT CZTI

Data Quality Report

Orbit 26385

Creation date: 2024-06-27T19:28:03.509426
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/AS1A09_088T01_9000003808_26385cztM0_level2.evt modeM0/AS1A09_088T01_9000003808_26385cztM0_level2_quad_clean.evt
Size (bytes)662,316,48077,883,840
Size631.6 MB 74.3 MB
Events in quadrant A3,300,370499,234
Events in quadrant B3,318,322507,565
Events in quadrant C6,828,142449,701
Events in quadrant D6,182,790459,142

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140500
B0139660
C0247390
D0227220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6337610.962601%
B6337630.994161%
C6337115418.210510%
D633776212.024617%

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 7532 6337 3 3 0.04% 0.05%
B 7532 6337 2 2 0.03% 0.03%
C 7532 6338 520 520 6.90% 8.20%
D 7532 6338 553 553 7.34% 8.73%

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 0 13 43893 259.68 844 831 165.8
A 13 254 10893 60.68 844 831 165.8
A 0 226 7440 39.85 844 831 165.8
B 12 111 17673 107.16 842 823 157.2
B 0 230 17652 107.03 842 823 157.2
B 11 111 16001 96.53 842 823 157.2
C 3 233 3709572 21342.07 759 765 173.8
C 14 238 124362 711.23 759 765 173.8
C 2 16 28670 160.58 759 765 173.8
D 7 80 1725995 9485.96 768 748 181.9
D 1 52 1366646 7510.14 768 748 181.9
D 12 233 61499 334.03 768 748 181.9

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