ASTROSAT CZTI

Data Quality Report

Orbit 42861

Creation date: 2024-06-27T22:45:06.271302
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/AS1T05_138T01_9000005828_42861cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42861cztM0_level2_quad_clean.evt
Size (bytes)364,674,24093,513,600
Size347.8 MB 89.2 MB
Events in quadrant A3,381,295612,141
Events in quadrant B2,733,898633,115
Events in quadrant C3,291,005628,758
Events in quadrant D3,659,391567,574

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135032
B0119292
C0132542
D0144652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55691172.100916%
B5570410.736086%
C55701192.136445%
D55701723.087971%

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 7271 5570 83 83 1.14% 1.49%
B 7272 5571 25 25 0.34% 0.45%
C 7272 5571 124 124 1.71% 2.23%
D 7271 5570 182 182 2.50% 3.27%

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 10 83 589923 4653.93 610 597 126.6
A 15 237 236375 1861.95 610 597 126.6
A 13 248 118577 931.69 610 597 126.6
B 5 172 127323 1071.22 610 594 118.3
B 5 255 103392 868.93 610 594 118.3
B 4 67 27967 231.38 610 594 118.3
C 14 254 364574 2586.69 599 604 140.7
C 15 214 224916 1594.16 599 604 140.7
C 7 220 155929 1103.88 599 604 140.7
D 12 6 371524 2531.68 599 585 146.5
D 1 52 295791 2014.8 599 585 146.5
D 10 118 227073 1545.79 599 585 146.5

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