ASTROSAT CZTI

Data Quality Report

Orbit 41446

Creation date: 2024-06-27T22:29:10.385249
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_100T01_9000005668_41446cztM0_level2.fits modeM0/AS1T05_100T01_9000005668_41446cztM0_level2_quad_clean.evt
Size (bytes)301,602,24083,980,800
Size287.6 MB 80.1 MB
Events in quadrant A2,956,246569,033
Events in quadrant B2,287,997592,271
Events in quadrant C3,014,213530,966
Events in quadrant D2,526,677509,449

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118203
B0100372
C0118422
D0109342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4862470.966680%
B4862390.802139%
C48622775.697244%
D4862450.925545%

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 6984 4863 25 25 0.36% 0.51%
B 6984 4863 19 19 0.27% 0.39%
C 6984 4863 278 278 3.98% 5.72%
D 6984 4863 47 47 0.67% 0.97%

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 470926 4137.19 552 540 113.7
A 13 248 234282 2055.83 552 540 113.7
A 2 79 104507 914.42 552 540 113.7
B 0 190 68087 634.66 551 537 106.4
B 0 186 38551 357.15 551 537 106.4
B 12 111 13130 118.32 551 537 106.4
C 0 10 799953 6569.75 518 522 121.7
C 15 214 198170 1624.28 518 522 121.7
C 13 61 3473 24.25 518 522 121.7
D 13 249 202786 1557.16 529 515 129.9
D 13 171 110960 850.25 529 515 129.9
D 1 47 86844 664.6 529 515 129.9

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