ASTROSAT CZTI

Data Quality Report

Orbit 39473

Creation date: 2024-06-27T22:05:01.069694
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_088T26_9000005482_39473cztM0_level2.fits modeM0/AS1A12_088T26_9000005482_39473cztM0_level2_quad_clean.evt
Size (bytes)141,750,72031,423,680
Size135.2 MB 30.0 MB
Events in quadrant A1,329,292212,921
Events in quadrant B1,021,665218,338
Events in quadrant C1,522,284199,605
Events in quadrant D1,232,561190,025

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051882
B041541
C056721
D048471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1787251.398993%
B1787492.742026%
C17871518.449916%
D1787693.861220%

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 3609 1788 22 22 0.61% 1.23%
B 3609 1788 24 24 0.67% 1.34%
C 3609 1788 125 125 3.46% 6.99%
D 3609 1788 43 43 1.19% 2.40%

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 278096 6188.55 211 207 44.9
A 10 83 183096 4072.91 211 207 44.9
A 2 79 22006 485.46 211 207 44.9
B 5 184 149267 3518.32 209 204 42.4
B 8 3 24781 580.09 209 204 42.4
B 5 255 12711 295.2 209 204 42.4
C 15 208 581544 12078.12 201 203 48.1
C 15 214 74366 1540.83 201 203 48.1
C 9 187 71955 1490.74 201 203 48.1
D 2 249 154014 3062.57 203 197 50.2
D 12 0 89066 1769.43 203 197 50.2
D 12 227 73241 1454.34 203 197 50.2

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