ASTROSAT CZTI

Data Quality Report

Orbit 04692

Creation date: 2024-06-27T14:45:44.658550
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/AS1G05_235T01_9000000590_04692cztM0_level2.evt modeM0/AS1G05_235T01_9000000590_04692cztM0_level2_quad_clean.evt
Size (bytes)302,420,16046,854,720
Size288.4 MB 44.7 MB
Events in quadrant A1,891,239278,494
Events in quadrant B2,170,808284,152
Events in quadrant C2,054,358281,822
Events in quadrant D2,744,816266,891

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088782
B095361
C093601
D0113651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A435950.114705%
B4359120.275292%
C4359420.963524%
D4359731.674696%

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 4359 4359 0 0 0.00% 0.00%
B 4359 4359 6 6 0.14% 0.14%
C 4359 4359 28 28 0.64% 0.64%
D 4359 4359 54 54 1.24% 1.24%

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 13 251 26776 270.1 473 463 97.4
A 15 174 16253 162.09 473 463 97.4
A 8 15 12775 126.38 473 463 97.4
B 8 3 103186 1115.82 480 469 92.1
B 15 204 86366 933.1 480 469 92.1
B 14 167 43726 469.9 480 469 92.1
C 14 48 211756 1922.27 470 471 109.9
C 9 68 6826 57.82 470 471 109.9
C 13 61 3922 31.4 470 471 109.9
D 13 235 453521 4072.33 463 450 111.3
D 2 63 208940 1873.97 463 450 111.3
D 12 217 97930 876.18 463 450 111.3

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