ASTROSAT CZTI

Data Quality Report

Orbit 36834

Creation date: 2024-06-27T21:32:10.006376
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/AS1A11_075T01_9000005244_36834cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36834cztM0_level2_quad_clean.evt
Size (bytes)1,983,510,720153,613,440
Size1.8 GB 146.5 MB
Events in quadrant A7,623,3911,040,980
Events in quadrant B35,604,872486,619
Events in quadrant C7,828,0581,047,320
Events in quadrant D7,974,0431,007,889

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323135
B01163764
C0324474
D0343344

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15449240.155350%
B154491291183.571752%
C15449640.414266%
D154491551.003301%

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 19719 15452 6 6 0.03% 0.04%
B 19718 15449 12393 12393 62.85% 80.22%
C 19719 15452 45 45 0.23% 0.29%
D 19719 15452 131 131 0.66% 0.85%

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 10 83 584071 1642.8 1751 1714 354.5
A 7 3 122360 340.34 1751 1714 354.5
A 9 143 65639 180.33 1751 1714 354.5
B 12 1 30603484 167831.64 966 939 182.3
B 5 255 204431 1116.0 966 939 182.3
B 5 172 163466 891.34 966 939 182.3
C 15 214 660414 1675.48 1705 1715 393.1
C 14 254 180223 454.06 1705 1715 393.1
C 0 10 143961 361.82 1705 1715 393.1
D 13 249 292628 702.69 1705 1661 414.1
D 12 233 281689 676.27 1705 1661 414.1
D 2 153 171224 409.5 1705 1661 414.1

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