ASTROSAT CZTI

Data Quality Report

Orbit 16651

Creation date: 2024-06-27T17:25:33.254526
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/AS1A05_002T10_9000002460_16651cztM0_level2.evt modeM0/AS1A05_002T10_9000002460_16651cztM0_level2_quad_clean.evt
Size (bytes)649,316,160131,083,200
Size619.2 MB 125.0 MB
Events in quadrant A4,521,117853,679
Events in quadrant B4,294,918882,730
Events in quadrant C4,022,338837,245
Events in quadrant D6,243,815799,592

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193003
B0184992
C0175902
D0245502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85912552.968223%
B85911351.571412%
C85911501.746013%
D85916037.018973%

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 9062 8594 148 148 1.63% 1.72%
B 9062 8594 6 6 0.07% 0.07%
C 9062 8594 0 0 0.00% 0.00%
D 9062 8594 526 526 5.80% 6.12%

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 9 143 586800 2920.88 996 973 200.6
A 12 96 96656 477.07 996 973 200.6
A 0 226 8491 37.48 996 973 200.6
B 15 35 109692 557.33 1012 982 195.1
B 0 189 86123 436.5 1012 982 195.1
B 0 198 47999 241.05 1012 982 195.1
C 14 238 148457 651.23 967 970 226.5
C 3 233 79619 347.28 967 970 226.5
C 7 247 15459 63.97 967 970 226.5
D 2 16 1660543 7121.32 961 932 233.0
D 1 52 714140 3060.34 961 932 233.0
D 5 222 76523 324.36 961 932 233.0

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