ASTROSAT CZTI

Data Quality Report

Orbit 39057

Creation date: 2024-06-27T21:59:51.875538
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_077T06_9000005430_39057cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39057cztM0_level2_quad_clean.evt
Size (bytes)449,968,32085,596,480
Size429.1 MB 81.6 MB
Events in quadrant A7,235,246485,902
Events in quadrant B2,305,925638,767
Events in quadrant C2,831,960602,672
Events in quadrant D3,905,092523,635

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248723
B099132
C0114452
D0149222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4865129726.659815%
B4865100.205550%
C4865711.459404%
D48654679.599178%

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 6987 4866 1217 1217 17.42% 25.01%
B 6987 4866 3 3 0.04% 0.06%
C 6987 4866 54 54 0.77% 1.11%
D 6987 4866 382 382 5.47% 7.85%

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 15 222 4760234 45063.4 529 519 105.6
A 10 83 383610 3626.98 529 519 105.6
A 13 248 40262 376.27 529 519 105.6
B 15 85 15327 135.13 576 561 109.3
B 12 111 13219 115.84 576 561 109.3
B 5 172 13012 113.95 576 561 109.3
C 15 208 375154 2856.52 568 573 131.1
C 15 214 205593 1563.46 568 573 131.1
C 3 233 10222 73.58 568 573 131.1
D 2 249 913281 6944.82 544 530 131.4
D 1 47 352611 2678.87 544 530 131.4
D 12 233 343798 2611.81 544 530 131.4

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