ASTROSAT CZTI

Data Quality Report

Orbit 40186

Creation date: 2024-06-27T22:13:14.712791
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_032T04_9000005528_40186cztM0_level2.fits modeM0/AS1A12_032T04_9000005528_40186cztM0_level2_quad_clean.evt
Size (bytes)421,922,88084,470,400
Size402.4 MB 80.6 MB
Events in quadrant A2,703,186609,418
Events in quadrant B2,302,119633,721
Events in quadrant C3,734,090575,553
Events in quadrant D6,503,820401,274

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109613
B099722
C0141192
D0225962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4818360.747198%
B4818150.311333%
C48181823.777501%
D4818141229.306766%

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 6940 4819 24 24 0.35% 0.50%
B 6940 4819 8 8 0.12% 0.17%
C 6940 4819 179 179 2.58% 3.71%
D 6940 4819 1292 1292 18.62% 26.81%

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 438275 3907.86 551 544 112.0
A 13 248 109372 971.57 551 544 112.0
A 2 79 19930 173.07 551 544 112.0
B 4 171 38591 358.89 556 543 106.0
B 5 255 34041 315.97 556 543 106.0
B 0 245 29931 277.21 556 543 106.0
C 9 187 1375392 10983.51 539 542 125.2
C 15 214 202723 1615.2 539 542 125.2
C 0 10 43817 345.72 539 542 125.2
D 2 249 2634734 23535.41 454 442 111.9
D 12 227 1720936 15371.32 454 442 111.9
D 13 249 181337 1616.16 454 442 111.9

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