ASTROSAT CZTI

Data Quality Report

Orbit 33653

Creation date: 2024-06-27T20:51:07.305084
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/AS1T04_076T01_9000004810_33653cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33653cztM0_level2_quad_clean.evt
Size (bytes)652,377,60057,683,520
Size622.2 MB 55.0 MB
Events in quadrant A4,538,066358,315
Events in quadrant B4,702,974318,977
Events in quadrant C4,574,432356,947
Events in quadrant D5,580,590336,621

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169843
B0175042
C0176272
D0202952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53635269.807943%
B536369312.921872%
C53631252.330785%
D53633676.843185%

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 7303 5363 421 421 5.76% 7.85%
B 7304 5363 601 601 8.23% 11.21%
C 7304 5364 109 109 1.49% 2.03%
D 7304 5364 327 327 4.48% 6.10%

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 15 237 1241268 8910.07 694 683 139.2
A 15 169 593649 4258.77 694 683 139.2
A 13 254 9647 64.38 694 683 139.2
B 5 172 992212 7867.42 676 661 126.0
B 15 222 714099 5660.74 676 661 126.0
B 0 229 200896 1588.76 676 661 126.0
C 3 233 1269140 8047.29 695 704 157.6
C 0 10 254659 1611.16 695 704 157.6
C 15 214 248686 1573.26 695 704 157.6
D 8 195 1195187 6784.39 681 667 176.1
D 2 250 501222 2842.95 681 667 176.1
D 7 223 201025 1137.95 681 667 176.1

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