ASTROSAT CZTI

Data Quality Report

Orbit 45571

Creation date: 2024-06-27T23:13:45.819432
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/AS1A13_071T04_9000006110_45571cztM0_level2.fits modeM0/AS1A13_071T04_9000006110_45571cztM0_level2_quad_clean.evt
Size (bytes)1,768,916,160384,422,400
Size1.6 GB 366.6 MB
Events in quadrant A20,152,4482,581,082
Events in quadrant B13,402,2172,610,898
Events in quadrant C12,684,3352,513,066
Events in quadrant D17,365,6452,263,550

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0759454
B05687314
C0553214
D0680244

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04920
B04920
C04920
D04920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A242814671.923315%
B242789603.954197%
C242816602.718175%
D2428113135.407520%

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 26946 24285 24 24 0.09% 0.10%
B 26946 24283 481 481 1.79% 1.98%
C 26946 24285 419 419 1.55% 1.73%
D 26946 24285 885 885 3.28% 3.64%

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 9493457 17209.56 2684 2622 551.5
A 10 248 200519 358.84 2684 2622 551.5
A 0 243 50625 87.04 2684 2622 551.5
B 5 172 1147808 2217.93 2647 2565 516.4
B 15 201 787003 1519.18 2647 2565 516.4
B 4 171 190600 364.16 2647 2565 516.4
C 12 2 2120234 3456.99 2624 2640 612.6
C 14 254 261733 422.97 2624 2640 612.6
C 5 4 43536 66.76 2624 2640 612.6
D 1 52 4812662 7270.91 2611 2530 661.6
D 11 241 747604 1126.24 2611 2530 661.6
D 5 171 738670 1112.74 2611 2530 661.6

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