ASTROSAT CZTI

Data Quality Report

Orbit 39577

Creation date: 2024-06-27T22:06:21.686906
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/AS1A12_018T01_9000005488_39577cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39577cztM0_level2_quad_clean.evt
Size (bytes)431,919,36089,504,640
Size411.9 MB 85.4 MB
Events in quadrant A3,330,240628,780
Events in quadrant B2,483,965644,319
Events in quadrant C4,882,323565,175
Events in quadrant D4,907,932525,667

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133673
B0106752
C0178812
D0179892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4943380.768764%
B4943631.274530%
C494357011.531459%
D494350910.297390%

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 7037 4944 21 21 0.30% 0.42%
B 7037 4944 41 41 0.58% 0.83%
C 7037 4944 548 548 7.79% 11.08%
D 7037 4944 497 497 7.06% 10.05%

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 15 222 568484 4976.58 568 558 114.1
A 10 83 425744 3725.79 568 558 114.1
A 9 143 54785 475.18 568 558 114.1
B 5 172 199331 1873.51 566 551 106.1
B 5 255 46577 433.8 566 551 106.1
B 0 230 17754 162.14 566 551 106.1
C 9 187 1677872 13204.09 548 553 127.0
C 15 208 726678 5716.16 548 553 127.0
C 15 214 204627 1606.5 548 553 127.0
D 12 227 2074421 15733.71 537 522 131.8
D 13 249 260431 1971.81 537 522 131.8
D 7 38 170789 1291.74 537 522 131.8

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