ASTROSAT CZTI

Data Quality Report

Orbit 07267

Creation date: 2024-06-27T15:17:44.619386
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/AS1A02_155T01_9000000994_07267cztM0_level2.evt modeM0/AS1A02_155T01_9000000994_07267cztM0_level2_quad_clean.evt
Size (bytes)445,440,96096,209,280
Size424.8 MB 91.8 MB
Events in quadrant A3,145,675610,862
Events in quadrant B3,265,317635,258
Events in quadrant C3,464,538618,427
Events in quadrant D3,160,866583,807

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139073
B0142092
C0146392
D0142612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6672390.584532%
B6672550.824341%
C6672240.359712%
D6672420.629496%

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 7892 6673 0 0 0.00% 0.00%
B 7892 6673 7 7 0.09% 0.10%
C 7892 6673 10 10 0.13% 0.15%
D 7892 6673 27 27 0.34% 0.40%

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 8 15 79822 493.18 793 776 160.3
A 14 111 10539 60.91 793 776 160.3
A 0 226 7456 41.68 793 776 160.3
B 4 81 47880 308.41 810 791 152.7
B 0 214 32651 208.67 810 791 152.7
B 12 111 15408 95.73 810 791 152.7
C 7 247 365040 1997.58 789 796 182.3
C 9 68 16759 87.54 789 796 182.3
C 13 61 6132 29.26 789 796 182.3
D 14 34 106203 560.98 773 749 188.0
D 2 14 100390 530.06 773 749 188.0
D 12 233 33498 174.21 773 749 188.0

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