ASTROSAT CZTI

Data Quality Report

Orbit 49843

Creation date: 2024-12-15T15:48:42.911528
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/AS1A13_037T01_9000006440_49843cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49843cztM0_level2_quad_clean.evt
Size (bytes)1,163,283,84055,552,320
Size1.1 GB 53.0 MB
Events in quadrant A9,103,835499,830
Events in quadrant B3,962,183688,120
Events in quadrant C14,294,36612,403
Events in quadrant D15,166,8091,528

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319161
B0165041
C0471941
D0497861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6893176425.591179%
B68923565.165409%
C6892678898.491004%
D6892688199.840395%

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 7128 6894 1229 1229 17.24% 17.83%
B 7127 6893 43 43 0.60% 0.62%
C 7127 6892 4166 4166 58.45% 60.45%
D 7126 6891 4885 4885 68.55% 70.89%

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 3 84 2227034 12815.81 702 684 173.7
A 4 4 1418856 8163.59 702 684 173.7
A 3 14 483603 2779.88 702 684 173.7
B 0 229 249011 1524.1 757 729 162.9
B 10 28 240445 1471.52 757 729 162.9
B 4 206 226428 1385.48 757 729 162.9
C 15 230 3456632 51233.1 193 189 67.5
C 15 197 2484704 36826.7 193 189 67.5
C 15 164 1364217 20218.29 193 189 67.5
D 8 129 3582530 57433.98 195 186 62.4
D 7 61 3478558 55767.04 195 186 62.4
D 15 185 1489231 23873.13 195 186 62.4

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