ASTROSAT CZTI

Data Quality Report

Orbit 37466

Creation date: 2024-06-27T21:40:23.017172
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_027T01_9000005324_37466cztM0_level2.evt modeM0/AS1A11_027T01_9000005324_37466cztM0_level2_quad_clean.evt
Size (bytes)435,810,24099,763,200
Size415.6 MB 95.1 MB
Events in quadrant A3,719,582653,896
Events in quadrant B2,731,292680,695
Events in quadrant C2,734,381688,016
Events in quadrant D3,648,142622,413

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145843
B0117092
C0113512
D0145012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5381190.353094%
B5381661.226538%
C5381440.817692%
D53813666.801710%

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 7114 5382 13 13 0.18% 0.24%
B 7114 5382 46 46 0.65% 0.85%
C 7114 5382 33 33 0.46% 0.61%
D 7113 5381 326 326 4.58% 6.06%

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 998025 8281.35 598 586 120.4
A 10 83 290353 2405.82 598 586 120.4
A 13 248 72653 598.34 598 586 120.4
B 5 172 267511 2343.81 598 582 113.9
B 0 190 42648 369.37 598 582 113.9
B 0 229 23484 201.09 598 582 113.9
C 15 214 229818 1668.46 594 598 137.4
C 0 10 149135 1081.18 594 598 137.4
C 14 254 28154 200.58 594 598 137.4
D 13 249 945169 6848.22 569 554 137.9
D 2 153 182571 1319.57 569 554 137.9
D 2 249 130241 940.19 569 554 137.9

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