ASTROSAT CZTI

Data Quality Report

Orbit 38692

Creation date: 2024-06-27T21:55:11.046970
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_054T01_9000005392_38692cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38692cztM0_level2_quad_clean.evt
Size (bytes)398,724,48093,576,960
Size380.3 MB 89.2 MB
Events in quadrant A3,059,125656,048
Events in quadrant B4,368,868601,080
Events in quadrant C3,012,861636,636
Events in quadrant D3,902,212565,499

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123153
B0164182
C0121932
D0153732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5351420.784900%
B535170213.119043%
C5351581.083910%
D53512674.989722%

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 7324 5352 32 32 0.44% 0.60%
B 7324 5352 617 617 8.42% 11.53%
C 7324 5352 41 41 0.56% 0.77%
D 7324 5352 234 234 3.19% 4.37%

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 398912 3188.23 616 605 124.9
A 13 248 205138 1637.17 616 605 124.9
A 15 174 58642 464.55 616 605 124.9
B 5 184 1434231 12752.63 589 574 112.4
B 4 171 375988 3339.37 589 574 112.4
B 0 221 189523 1680.73 589 574 112.4
C 2 16 244659 1751.03 597 601 139.4
C 15 214 219586 1571.14 597 601 139.4
C 14 254 163563 1169.19 597 601 139.4
D 2 16 651637 4455.42 584 565 146.1
D 12 227 356517 2435.85 584 565 146.1
D 5 222 215227 1468.98 584 565 146.1

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