ASTROSAT CZTI

Data Quality Report

Orbit 42201

Creation date: 2024-06-27T22:38:28.031110
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_089T01_9000005776_42201cztM0_level2.fits modeM0/AS1A12_089T01_9000005776_42201cztM0_level2_quad_clean.evt
Size (bytes)290,416,32080,988,480
Size277.0 MB 77.2 MB
Events in quadrant A2,928,405544,038
Events in quadrant B2,368,282560,404
Events in quadrant C2,241,266531,033
Events in quadrant D2,832,904475,369

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117172
B0104412
C098212
D0119982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4865601.233299%
B4865330.678314%
C486520.041110%
D48651142.343268%

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 6958 4866 63 63 0.91% 1.29%
B 6958 4866 31 31 0.45% 0.64%
C 6958 4866 1 1 0.01% 0.02%
D 6958 4866 100 100 1.44% 2.06%

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 514370 4726.06 526 517 108.7
A 15 223 268354 2463.38 526 517 108.7
A 14 24 37786 342.77 526 517 108.7
B 7 202 183301 1772.75 528 514 103.1
B 0 229 64028 615.99 528 514 103.1
B 15 35 29700 283.06 528 514 103.1
C 15 214 204283 1673.25 515 519 121.8
C 7 247 12018 94.43 515 519 121.8
C 12 251 5950 44.6 515 519 121.8
D 1 52 362643 2897.96 504 488 125.0
D 13 249 145488 1160.29 504 488 125.0
D 1 47 106827 850.92 504 488 125.0

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