ASTROSAT CZTI

Data Quality Report

Orbit 38706

Creation date: 2024-06-27T21:55:21.483949
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_38706cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38706cztM0_level2_quad_clean.evt
Size (bytes)553,020,48085,530,240
Size527.4 MB 81.6 MB
Events in quadrant A2,787,813644,283
Events in quadrant B5,050,220550,702
Events in quadrant C2,856,884626,459
Events in quadrant D9,363,653396,258

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115693
B0182872
C0116252
D0314822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A531190.169460%
B531199318.697044%
C5311400.753154%
D5311205738.730936%

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 8955 5313 6 6 0.07% 0.11%
B 8955 5313 845 845 9.44% 15.90%
C 8955 5313 47 47 0.52% 0.88%
D 8955 5313 1730 1730 19.32% 32.56%

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 391366 3143.48 612 601 124.3
A 10 255 8056 59.97 612 601 124.3
A 13 254 7730 57.35 612 601 124.3
B 5 184 2597988 24736.26 551 536 105.0
B 4 171 244954 2327.66 551 536 105.0
B 0 230 17920 165.55 551 536 105.0
C 14 254 273129 1963.8 597 599 138.8
C 15 214 219160 1574.91 597 599 138.8
C 0 10 18575 129.53 597 599 138.8
D 2 16 5865247 46036.97 517 502 127.4
D 12 227 628586 4930.32 517 502 127.4
D 12 235 525543 4121.45 517 502 127.4

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