ASTROSAT CZTI

Data Quality Report

Orbit 41586

Creation date: 2024-06-27T22:30:25.611851
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/AS1C07_001T10_9000005678_41586cztM0_level2.fits modeM0/AS1C07_001T10_9000005678_41586cztM0_level2_quad_clean.evt
Size (bytes)387,285,12089,654,400
Size369.3 MB 85.5 MB
Events in quadrant A3,302,316619,196
Events in quadrant B2,662,001638,471
Events in quadrant C3,252,346576,516
Events in quadrant D4,683,262488,818

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132782
B0116522
C0132252
D0178512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5599831.482408%
B5599140.250045%
C55992564.572245%
D559979314.163243%

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 7301 5600 50 50 0.68% 0.89%
B 7301 5600 6 6 0.08% 0.11%
C 7301 5600 229 229 3.14% 4.09%
D 7301 5600 547 547 7.49% 9.77%

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 589529 4618.98 618 607 127.5
A 2 79 242976 1900.93 618 607 127.5
A 15 223 49784 385.7 618 607 127.5
B 0 245 49276 412.71 614 597 117.9
B 0 189 48565 406.68 614 597 117.9
B 5 255 46053 385.38 614 597 117.9
C 0 10 564751 4184.14 585 587 134.8
C 15 214 243551 1801.95 585 587 134.8
C 4 254 145111 1071.87 585 587 134.8
D 13 249 2005458 14582.65 557 539 137.5
D 10 199 118783 860.04 557 539 137.5
D 2 120 112404 813.64 557 539 137.5

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