ASTROSAT CZTI

Data Quality Report

Orbit 39348

Creation date: 2024-06-27T22:03:31.160542
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_9000005470_39348cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39348cztM0_level2_quad_clean.evt
Size (bytes)421,974,72083,183,040
Size402.4 MB 79.3 MB
Events in quadrant A2,618,026590,100
Events in quadrant B2,225,668605,453
Events in quadrant C2,490,838561,974
Events in quadrant D7,885,636400,959

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108413
B0103342
C0106852
D0270002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A514280.155581%
B514280.155581%
C5142120.233372%
D5142153129.774407%

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 7056 5143 3 3 0.04% 0.06%
B 7056 5143 2 2 0.03% 0.04%
C 7056 5143 3 3 0.04% 0.06%
D 7056 5143 1348 1348 19.10% 26.21%

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 415105 3635.82 564 552 114.0
A 13 248 10609 88.2 564 552 114.0
A 13 254 7855 64.05 564 552 114.0
B 5 172 22298 201.94 558 542 107.7
B 12 111 13361 118.99 558 542 107.7
B 11 111 12550 111.46 558 542 107.7
C 15 214 236407 1881.3 541 543 125.4
C 9 187 115706 918.56 541 543 125.4
C 0 10 12616 96.3 541 543 125.4
D 12 235 5351701 45662.07 482 467 117.2
D 2 249 474229 4042.61 482 467 117.2
D 13 249 91122 773.56 482 467 117.2

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