ASTROSAT CZTI

Data Quality Report

Orbit 38085

Creation date: 2024-06-27T21:48:13.529778
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/AS1A11_047T09_9000005362_38085cztM0_level2.fits modeM0/AS1A11_047T09_9000005362_38085cztM0_level2_quad_clean.evt
Size (bytes)340,747,20096,324,480
Size325.0 MB 91.9 MB
Events in quadrant A2,976,451667,472
Events in quadrant B2,553,696689,647
Events in quadrant C3,059,513638,904
Events in quadrant D3,631,840568,266

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120033
B0106212
C0120082
D0141712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5034240.476758%
B5034140.278109%
C50341062.105681%
D50342895.740961%

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 7097 5035 15 15 0.21% 0.30%
B 7097 5035 2 2 0.03% 0.04%
C 7097 5035 90 90 1.27% 1.79%
D 7097 5035 253 253 3.56% 5.02%

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 341171 2720.02 619 608 125.2
A 12 16 104480 829.61 619 608 125.2
A 7 3 38118 299.59 619 608 125.2
B 0 229 32808 271.41 624 608 118.6
B 4 232 21470 175.84 624 608 118.6
B 4 81 19511 159.33 624 608 118.6
C 1 23 450290 3228.42 601 608 139.3
C 15 214 208240 1490.66 601 608 139.3
C 0 10 33452 235.8 601 608 139.3
D 2 250 680116 4799.93 583 567 141.6
D 13 249 201720 1420.83 583 567 141.6
D 12 233 151009 1062.63 583 567 141.6

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