ASTROSAT CZTI

Data Quality Report

Orbit 04969

Creation date: 2024-06-27T14:49:31.910109
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/AS1G05_158T01_9000000630_04969cztM0_level2.evt modeM0/AS1G05_158T01_9000000630_04969cztM0_level2_quad_clean.evt
Size (bytes)552,000,96094,849,920
Size526.4 MB 90.5 MB
Events in quadrant A3,577,243594,566
Events in quadrant B4,038,654593,755
Events in quadrant C3,423,041597,187
Events in quadrant D5,158,742553,992

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160203
B0170982
C0157612
D0207332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7664380.495825%
B7664580.756785%
C7664210.274008%
D76643424.462422%

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 7824 7665 7 7 0.09% 0.09%
B 7824 7665 3 3 0.04% 0.04%
C 7824 7665 0 0 0.00% 0.00%
D 7824 7665 259 259 3.31% 3.38%

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 50 76744 408.61 898 876 185.7
A 13 251 42681 225.15 898 876 185.7
A 0 226 9270 45.21 898 876 185.7
B 15 204 417267 2391.95 905 884 174.1
B 0 219 33331 186.39 905 884 174.1
B 14 167 28378 157.94 905 884 174.1
C 1 16 22858 108.36 867 870 202.9
C 13 61 7192 31.16 867 870 202.9
C 1 3 6455 27.52 867 870 202.9
D 2 136 787523 3726.96 853 828 211.1
D 2 33 399909 1890.64 853 828 211.1
D 13 235 212101 1000.9 853 828 211.1

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