ASTROSAT CZTI

Data Quality Report

Orbit 19567

Creation date: 2024-06-27T18:04:17.310309
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_005T01_9000002908_19567cztM0_level2.evt modeM0/AS1T03_005T01_9000002908_19567cztM0_level2_quad_clean.evt
Size (bytes)548,006,40079,943,040
Size522.6 MB 76.2 MB
Events in quadrant A3,062,741518,311
Events in quadrant B3,145,499530,681
Events in quadrant C3,158,428494,050
Events in quadrant D6,805,433440,601

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129762
B0131472
C0132052
D0246002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6258440.703100%
B6258520.830936%
C6258651.038671%
D625892814.829019%

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 7423 6258 0 0 0.00% 0.00%
B 7423 6258 1 1 0.01% 0.02%
C 7423 6259 0 0 0.00% 0.00%
D 7423 6258 856 856 11.53% 13.68%

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 13 254 8676 49.67 792 776 159.1
A 13 210 6883 38.4 792 776 159.1
A 0 226 6874 38.34 792 776 159.1
B 0 198 42020 277.41 791 773 148.7
B 12 111 18042 116.14 791 773 148.7
B 11 111 16247 104.07 791 773 148.7
C 14 238 120845 681.41 753 758 176.2
C 3 233 44482 248.1 753 758 176.2
C 7 247 41632 231.93 753 758 176.2
D 12 218 2982664 17100.03 714 694 174.4
D 1 52 615477 3525.46 714 694 174.4
D 7 238 344736 1972.9 714 694 174.4

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