ASTROSAT CZTI

Data Quality Report

Orbit 40182

Creation date: 2024-06-27T22:13:11.192748
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_40182cztM0_level2.fits modeM0/AS1A12_032T04_9000005528_40182cztM0_level2_quad_clean.evt
Size (bytes)476,513,28087,848,640
Size454.4 MB 83.8 MB
Events in quadrant A3,212,488631,457
Events in quadrant B3,503,115627,866
Events in quadrant C7,722,134439,969
Events in quadrant D2,770,853573,098

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129743
B0141872
C0267002
D0121942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5534691.246838%
B55342123.830864%
C5534182532.977954%
D5534480.867365%

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 7267 5535 31 31 0.43% 0.56%
B 7267 5535 131 131 1.80% 2.37%
C 7267 5535 1775 1775 24.43% 32.07%
D 7267 5535 64 64 0.88% 1.16%

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 518232 4173.15 610 597 124.0
A 13 248 289847 2331.92 610 597 124.0
A 6 10 24513 192.81 610 597 124.0
B 0 229 624147 5403.56 602 585 115.4
B 5 255 152078 1312.78 602 585 115.4
B 5 32 95573 823.13 602 585 115.4
C 9 187 5443888 44630.43 522 526 122.0
C 15 214 207241 1694.87 522 526 122.0
C 0 10 15730 124.66 522 526 122.0
D 12 227 265728 1831.38 595 579 144.8
D 13 249 75292 516.04 595 579 144.8
D 12 218 38256 260.23 595 579 144.8

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