ASTROSAT CZTI

Data Quality Report

Orbit 21173

Creation date: 2024-06-27T18:24:34.929920
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/AS1A06_009T02_9000003130_21173cztM0_level2.evt modeM0/AS1A06_009T02_9000003130_21173cztM0_level2_quad_clean.evt
Size (bytes)483,298,56089,735,040
Size460.9 MB 85.6 MB
Events in quadrant A3,155,796594,219
Events in quadrant B3,165,960593,436
Events in quadrant C2,915,159571,268
Events in quadrant D4,991,702538,382

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133741
B0133281
C0126651
D0189091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6017791.312947%
B6018510.847458%
C6018621.030243%
D60182353.904952%

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 7137 6017 22 22 0.31% 0.37%
B 7138 6019 5 5 0.07% 0.08%
C 7138 6019 0 0 0.00% 0.00%
D 7138 6019 179 179 2.51% 2.97%

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 5 16 149248 978.9 754 739 151.7
A 10 229 84986 555.31 754 739 151.7
A 13 254 9277 56.28 754 739 151.7
B 0 189 75031 516.07 747 730 144.0
B 0 229 36396 247.72 747 730 144.0
B 0 190 34244 232.78 747 730 144.0
C 14 238 110741 662.84 709 713 166.0
C 3 233 36773 217.23 709 713 166.0
C 13 61 4984 25.73 709 713 166.0
D 1 20 860141 4910.89 714 694 175.0
D 1 52 722670 4125.38 714 694 175.0
D 13 153 238328 1357.84 714 694 175.0

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