ASTROSAT CZTI

Data Quality Report

Orbit 20220707_A11_049T03_9000005228_level2

Creation date: 2022-07-08T18:08:07.062881
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/AS1A11_049T03_9000005228cztM0_level2_bc.evt modeM0/AS1A11_049T03_9000005228cztM0_level2_quad_clean.evt
Size (bytes)3,465,996,480604,800,000
Size3.2 GB 576.8 MB
Events in quadrant A12,876,8624,011,466
Events in quadrant B31,057,7253,466,623
Events in quadrant C19,289,0413,866,277
Events in quadrant D38,286,4353,476,149

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010380
B010380
C010380
D010380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01088530
B01984290
C01365700
D02045650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A508971590.312396%
B508971252624.610488%
C5089729335.762619%
D50897737614.492013%

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 69212 50908 10 10 0.01% 0.02%
B 69212 50866 1040 1040 1.50% 2.04%
C 69212 50898 210 210 0.30% 0.41%
D 69212 50896 1909 1909 2.76% 3.75%

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 1506329 2450.17 2749 2703 613.7
A 15 223 318539 514.66 2749 2703 613.7
A 9 143 117789 187.53 2749 2703 613.7
B 5 200 18954066 39315.13 2431 2381 482.0
B 5 255 1107077 2291.68 2431 2381 482.0
B 0 213 334417 688.81 2431 2381 482.0
C 14 254 4881091 8343.96 2577 2554 584.7
C 15 214 1986724 3393.61 2577 2554 584.7
C 0 10 1913674 3268.67 2577 2554 584.7
D 12 235 19313253 32354.19 2521 2449 596.9
D 2 250 3305928 5534.8 2521 2449 596.9
D 12 17 2492702 4172.28 2521 2449 596.9

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