ASTROSAT CZTI

Data Quality Report

Orbit 26339

Creation date: 2024-06-27T19:27:38.075500
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/AS1A09_008T02_9000003796_26339cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26339cztM0_level2_quad_clean.evt
Size (bytes)905,235,84066,657,600
Size863.3 MB 63.6 MB
Events in quadrant A3,034,691504,916
Events in quadrant B3,066,977511,173
Events in quadrant C6,461,868440,472
Events in quadrant D14,424,846118,751

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130840
B0131480
C0235120
D0470760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6316510.807473%
B6317681.076460%
C6317134521.291752%
D6317527783.536489%

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 7306 6317 0 0 0.00% 0.00%
B 7307 6318 3 3 0.04% 0.05%
C 7307 6318 815 815 11.15% 12.90%
D 7306 6316 4716 4716 64.55% 74.67%

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 6 16 13042 78.76 778 760 155.9
A 13 170 12284 73.9 778 760 155.9
A 13 254 9340 55.02 778 760 155.9
B 0 230 24168 159.15 773 753 147.1
B 12 16 19995 130.78 773 753 147.1
B 12 111 17626 114.68 773 753 147.1
C 3 233 3673997 23291.5 680 683 157.7
C 14 238 108975 686.65 680 683 157.7
C 2 16 17441 106.26 680 683 157.7
D 1 52 13259616 183316.85 304 296 72.3
D 2 234 12760 172.32 304 296 72.3
D 12 233 9770 130.98 304 296 72.3

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