ASTROSAT CZTI

Data Quality Report

Orbit 20468

Creation date: 2024-06-27T18:15:44.419368
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/AS1A05_198T01_9000003024_20468cztM0_level2.evt modeM0/AS1A05_198T01_9000003024_20468cztM0_level2_quad_clean.evt
Size (bytes)487,460,160104,984,640
Size464.9 MB 100.1 MB
Events in quadrant A3,142,451702,925
Events in quadrant B3,286,735721,933
Events in quadrant C3,531,048687,629
Events in quadrant D4,382,105634,499

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131772
B0135692
C0143322
D0170332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6193390.629743%
B6193641.033425%
C61931262.034555%
D61933936.345874%

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 7513 6195 0 0 0.00% 0.00%
B 7513 6194 3 3 0.04% 0.05%
C 7513 6195 17 17 0.23% 0.27%
D 7513 6195 363 363 4.83% 5.86%

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 12 16 10653 60.69 812 798 162.4
A 13 254 8307 46.24 812 798 162.4
A 12 194 7270 39.86 812 798 162.4
B 0 189 72995 465.38 816 796 155.1
B 12 111 17880 110.12 816 796 155.1
B 11 111 16172 99.11 816 796 155.1
C 3 9 294467 1594.55 795 804 184.2
C 14 238 126418 682.07 795 804 184.2
C 9 221 7053 33.93 795 804 184.2
D 15 0 1097087 5858.75 770 749 187.1
D 1 52 256908 1368.9 770 749 187.1
D 7 238 90916 481.85 770 749 187.1

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