ASTROSAT CZTI

Data Quality Report

Orbit 27389

Creation date: 2024-06-27T19:39:37.381700
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/AS1T03_249T01_9000003934_27389cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27389cztM0_level2_quad_clean.evt
Size (bytes)497,710,08072,599,040
Size474.7 MB 69.2 MB
Events in quadrant A3,160,296451,148
Events in quadrant B3,214,079450,376
Events in quadrant C3,673,864429,511
Events in quadrant D4,595,498425,424

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130760
B0132310
C0147070
D0177720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63221051.660867%
B63231151.818757%
C63232413.811482%
D63233585.661869%

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 7162 6322 0 0 0.00% 0.00%
B 7163 6323 7 7 0.10% 0.11%
C 7163 6324 66 66 0.92% 1.04%
D 7163 6323 246 246 3.43% 3.89%

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 12 96 20572 121.03 812 797 163.4
A 13 254 10385 58.68 812 797 163.4
A 3 137 7551 41.34 812 797 163.4
B 15 33 25828 164.23 797 774 152.6
B 4 52 20169 127.13 797 774 152.6
B 12 111 18590 116.78 797 774 152.6
C 2 16 517650 2850.65 773 778 181.3
C 14 238 122400 670.77 773 778 181.3
C 10 22 16292 85.56 773 778 181.3
D 1 52 1030523 5565.51 775 754 185.0
D 12 227 258436 1392.67 775 754 185.0
D 2 250 210775 1135.08 775 754 185.0

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