ASTROSAT CZTI

Data Quality Report

Orbit 16246

Creation date: 2024-06-27T17:19:54.103075
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/AS1T02_112T01_9000002390_16246cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16246cztM0_level2_quad_clean.evt
Size (bytes)514,860,480103,887,360
Size491.0 MB 99.1 MB
Events in quadrant A3,449,812667,699
Events in quadrant B4,128,345662,636
Events in quadrant C3,562,798661,337
Events in quadrant D3,954,551644,883

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151522
B0171231
C0151331
D0167451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7323260.355046%
B73231472.007374%
C7323410.559880%
D7323981.338249%

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 7749 7325 9 9 0.12% 0.12%
B 7749 7325 64 64 0.83% 0.87%
C 7749 7325 0 0 0.00% 0.00%
D 7749 7325 91 91 1.17% 1.24%

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 13 248 46281 255.31 870 853 177.9
A 15 174 45334 249.98 870 853 177.9
A 3 1 8072 40.57 870 853 177.9
B 10 16 243061 1473.11 864 844 164.4
B 7 220 232518 1408.99 864 844 164.4
B 4 216 41084 244.73 864 844 164.4
C 3 233 176821 898.43 830 835 195.9
C 14 238 126409 641.07 830 835 195.9
C 0 207 13905 66.72 830 835 195.9
D 1 52 536173 2616.05 838 814 204.6
D 15 0 139420 677.3 838 814 204.6
D 2 234 32826 156.43 838 814 204.6

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