ASTROSAT CZTI

Data Quality Report

Orbit 41838

Creation date: 2024-06-27T22:33:27.170305
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_099T04_9000005708_41838cztM0_level2.fits modeM0/AS1A12_099T04_9000005708_41838cztM0_level2_quad_clean.evt
Size (bytes)349,300,80084,778,560
Size333.1 MB 80.9 MB
Events in quadrant A4,412,810552,976
Events in quadrant B2,244,713600,288
Events in quadrant C2,970,103547,081
Events in quadrant D2,925,947527,855

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163592
B099022
C0116092
D0120322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48323958.174669%
B4832180.372517%
C48332404.965860%
D4833691.427685%

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 6985 4833 368 368 5.27% 7.61%
B 6985 4833 7 7 0.10% 0.14%
C 6986 4834 227 227 3.25% 4.70%
D 6986 4834 72 72 1.03% 1.49%

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 14 24 1827762 16729.46 534 523 109.2
A 10 83 466775 4268.81 534 523 109.2
A 2 79 40846 369.18 534 523 109.2
B 5 255 30432 288.27 545 530 103.7
B 3 112 27013 255.31 545 530 103.7
B 0 183 17221 160.91 545 530 103.7
C 0 10 768977 6460.87 512 515 118.9
C 15 214 192524 1614.32 512 515 118.9
C 14 254 11291 90.6 512 515 118.9
D 12 79 476321 3725.63 532 519 127.7
D 13 249 152444 1189.6 532 519 127.7
D 12 233 67658 525.71 532 519 127.7

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