ASTROSAT CZTI

Data Quality Report

Orbit 20220419_A11_095T06_9000005078_level2

Creation date: 2022-04-24T16:39:47.163568
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_095T06_9000005078cztM0_level2_bc.evt modeM0/AS1A11_095T06_9000005078cztM0_level2_quad_clean.evt
Size (bytes)2,210,034,240643,017,600
Size2.1 GB 613.2 MB
Events in quadrant A13,224,2424,035,986
Events in quadrant B15,926,5614,044,611
Events in quadrant C16,752,4443,953,663
Events in quadrant D17,391,8723,777,960

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02010
B02020
C02020
D02020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01141180
B01274060
C01242060
D01273940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010940
B010940
C010940
D010940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A533831860.348426%
B5338316643.117097%
C533839451.770226%
D5338310121.895735%

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 75911 53396 37 37 0.05% 0.07%
B 75911 53385 64 64 0.08% 0.12%
C 75911 53385 182 182 0.24% 0.34%
D 75911 53385 379 379 0.50% 0.71%

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 15 169 1450898 2371.4 2773 2729 610.7
A 10 83 924304 1509.1 2773 2729 610.7
A 13 6 108847 173.77 2773 2729 610.7
B 5 236 3451953 6387.29 2784 2721 540.0
B 5 172 688065 1269.12 2784 2721 540.0
B 5 200 400046 735.77 2784 2721 540.0
C 0 10 2508282 4085.33 2705 2682 613.3
C 15 214 2062094 3357.83 2705 2682 613.3
C 0 207 1484481 2416.04 2705 2682 613.3
D 13 249 1589920 2483.25 2704 2622 639.2
D 8 195 1171105 1828.04 2704 2622 639.2
D 7 80 1168246 1823.56 2704 2622 639.2

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