ASTROSAT CZTI

Data Quality Report

Orbit 39517

Creation date: 2024-06-27T22:05:34.622106
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_39517cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39517cztM0_level2_quad_clean.evt
Size (bytes)416,554,56090,426,240
Size397.3 MB 86.2 MB
Events in quadrant A3,484,522609,671
Events in quadrant B2,357,505651,251
Events in quadrant C6,574,337533,396
Events in quadrant D2,593,793575,507

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137563
B0106632
C0231402
D0114032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52632404.560137%
B5263130.247007%
C5263100919.171575%
D5263420.798024%

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 7147 5264 187 187 2.62% 3.55%
B 7147 5264 5 5 0.07% 0.09%
C 7147 5264 949 949 13.28% 18.03%
D 7147 5264 29 29 0.41% 0.55%

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 6 10 732275 6194.46 583 570 118.1
A 10 83 426807 3608.43 583 570 118.1
A 13 248 46816 391.51 583 570 118.1
B 15 85 26444 227.79 593 575 113.6
B 12 111 13662 115.24 593 575 113.6
B 11 111 12532 105.29 593 575 113.6
C 9 187 4100605 32325.25 551 554 126.8
C 15 214 207415 1630.91 551 554 126.8
C 3 110 102995 807.66 551 554 126.8
D 13 249 147479 1040.55 583 567 141.2
D 2 249 69682 489.53 583 567 141.2
D 12 227 36056 251.36 583 567 141.2

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