ASTROSAT CZTI

Data Quality Report

Orbit 41460

Creation date: 2024-06-27T22:29:20.203283
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_100T01_9000005668_41460cztM0_level2.fits modeM0/AS1T05_100T01_9000005668_41460cztM0_level2_quad_clean.evt
Size (bytes)306,138,24083,113,920
Size292.0 MB 79.3 MB
Events in quadrant A2,629,796568,474
Events in quadrant B2,214,941592,827
Events in quadrant C2,985,429527,100
Events in quadrant D3,129,861493,872

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106992
B097122
C0117522
D0126032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4771130.272480%
B477190.188640%
C47712665.575351%
D47712044.275833%

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 6863 4772 6 6 0.09% 0.13%
B 6863 4772 0 0 0.00% 0.00%
C 6863 4772 263 263 3.83% 5.51%
D 6863 4772 183 183 2.67% 3.83%

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 468289 4179.4 543 533 111.9
A 2 79 49829 440.46 543 533 111.9
A 13 254 8038 67.06 543 533 111.9
B 0 190 57024 537.75 546 531 105.1
B 12 111 13441 122.89 546 531 105.1
B 11 111 12183 110.91 546 531 105.1
C 0 10 713583 5916.49 513 516 120.5
C 15 214 197369 1633.34 513 516 120.5
C 9 54 64876 534.01 513 516 120.5
D 13 249 573715 4482.09 515 501 127.9
D 1 47 293241 2289.0 515 501 127.9
D 12 233 84123 653.86 515 501 127.9

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