ASTROSAT CZTI

Data Quality Report

Orbit 15690

Creation date: 2024-06-27T17:12:10.128334
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/AS1T02_088T01_9000002320_15690cztM0_level2.evt modeM0/AS1T02_088T01_9000002320_15690cztM0_level2_quad_clean.evt
Size (bytes)430,496,64055,491,840
Size410.6 MB 52.9 MB
Events in quadrant A2,964,939319,752
Events in quadrant B3,091,288328,623
Events in quadrant C3,130,126315,265
Events in quadrant D3,453,727307,530

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120782
B0124351
C0124321
D0138781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5845140.239521%
B5845230.393499%
C5845591.009410%
D58451482.532079%

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 7247 5848 0 0 0.00% 0.00%
B 7247 5848 0 0 0.00% 0.00%
C 7247 5848 2 2 0.03% 0.03%
D 7247 5848 118 118 1.63% 2.02%

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 4 2 26592 166.66 764 750 155.1
A 0 226 6769 38.82 764 750 155.1
A 12 194 5594 31.24 764 750 155.1
B 4 173 38230 260.38 770 753 143.9
B 0 214 21557 144.54 770 753 143.9
B 3 209 17175 114.09 770 753 143.9
C 14 238 115800 677.58 736 742 169.8
C 3 233 102189 597.42 736 742 169.8
C 9 54 29480 169.24 736 742 169.8
D 10 70 441416 2447.07 733 714 180.1
D 1 52 206078 1140.32 733 714 180.1
D 2 234 22096 118.73 733 714 180.1

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