ASTROSAT CZTI

Data Quality Report

Orbit 40912

Creation date: 2024-06-27T22:22:07.788978
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_101T01_9000005578_40912cztM0_level2.fits modeM0/AS1T05_101T01_9000005578_40912cztM0_level2_quad_clean.evt
Size (bytes)240,240,96067,106,880
Size229.1 MB 64.0 MB
Events in quadrant A1,996,733445,063
Events in quadrant B1,728,739460,410
Events in quadrant C2,183,084441,331
Events in quadrant D2,667,207399,615

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085132
B082651
C092501
D0108111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A405560.147965%
B405570.172626%
C4055922.268804%
D40551603.945746%

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 6059 4056 4 4 0.07% 0.10%
B 6059 4056 4 4 0.07% 0.10%
C 6059 4056 82 82 1.35% 2.02%
D 6059 4056 152 152 2.51% 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 323471 3722.53 421 412 86.8
A 13 248 16689 187.56 421 412 86.8
A 7 3 15766 176.92 421 412 86.8
B 0 190 33020 398.77 422 411 81.8
B 5 255 15857 188.89 422 411 81.8
B 12 111 10160 119.22 422 411 81.8
C 14 254 344572 3614.78 410 413 95.2
C 15 214 167564 1755.62 410 413 95.2
C 0 10 50226 523.2 410 413 95.2
D 12 79 354469 3616.67 402 391 97.9
D 12 233 320304 3267.69 402 391 97.9
D 13 249 201199 2051.12 402 391 97.9

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