ASTROSAT CZTI

Data Quality Report

Orbit 17261

Creation date: 2024-06-27T17:34:13.192532
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/AS1T03_059T01_9000002554_17261cztM0_level2.evt modeM0/AS1T03_059T01_9000002554_17261cztM0_level2_quad_clean.evt
Size (bytes)223,562,88030,404,160
Size213.2 MB 29.0 MB
Events in quadrant A1,620,930172,788
Events in quadrant B1,633,023173,669
Events in quadrant C1,657,026163,129
Events in quadrant D1,621,343164,109

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072291
B071941
C072121
D073422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3473571.641232%
B3474762.187680%
C3474982.820956%
D3473772.217103%

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 3868 3474 1 1 0.03% 0.03%
B 3869 3475 0 0 0.00% 0.00%
C 3869 3475 0 0 0.00% 0.00%
D 3868 3474 16 16 0.41% 0.46%

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 0 23 16609 189.73 416 407 85.4
A 0 226 4561 48.65 416 407 85.4
A 4 2 4311 45.72 416 407 85.4
B 12 111 10074 117.1 417 404 82.6
B 11 111 8749 101.06 417 404 82.6
B 14 111 7466 85.52 417 404 82.6
C 14 238 62004 630.09 407 408 97.8
C 3 233 9189 89.82 407 408 97.8
C 13 61 2774 24.2 407 408 97.8
D 2 14 31818 310.5 409 397 101.2
D 1 52 19935 193.07 409 397 101.2
D 2 234 14320 137.59 409 397 101.2

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