ASTROSAT CZTI

Data Quality Report

Orbit 20240726_C09_004T04_9000006346_level2

Creation date: 2024-07-29T11:28:32.644821
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/AS1C09_004T04_9000006346cztM0_level2.fits modeM0/AS1C09_004T04_9000006346cztM0_level2_quad_clean.evt
Size (bytes)821,738,8801,042,948,800
Size783.7 MB 994.6 MB
Events in quadrant A4,769,1266,521,606
Events in quadrant B4,680,8366,567,584
Events in quadrant C4,792,6406,249,242
Events in quadrant D4,145,3865,757,140

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03574610
B02236560
C02197650
D02299140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019260
B019260
C019260
D019260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9472437083.914531%
B9473626482.795136%
C9473330853.256521%
D9473334653.657648%

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 107756 94734 0 0 0.00% 0.00%
B 107756 94732 0 0 0.00% 0.00%
C 107756 94594 0 0 0.00% 0.00%
D 107756 94668 0 0 0.00% 0.00%

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 7 110 3819 8.38 1246 1168 316.3
A 0 29 3598 7.68 1246 1168 316.3
A 14 95 3582 7.63 1246 1168 316.3
B 2 9 4366 13.31 1236 1180 239.4
B 2 8 3610 10.15 1236 1180 239.4
B 3 17 3412 9.32 1236 1180 239.4
C 3 202 3732 7.78 1267 1176 328.6
C 1 81 3683 7.63 1267 1176 328.6
C 1 80 3505 7.09 1267 1176 328.6
D 15 47 3049 5.9 1191 1076 334.4
D 10 189 3037 5.86 1191 1076 334.4
D 6 38 2981 5.7 1191 1076 334.4

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