ASTROSAT CZTI

Data Quality Report

Orbit 40077

Creation date: 2024-06-27T22:12:04.096337
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/AS1T05_086T01_9000005518_40077cztM0_level2.fits modeM0/AS1T05_086T01_9000005518_40077cztM0_level2_quad_clean.evt
Size (bytes)625,642,560171,506,880
Size596.7 MB 163.6 MB
Events in quadrant A5,102,6851,171,910
Events in quadrant B4,359,6931,197,242
Events in quadrant C6,674,8151,117,507
Events in quadrant D6,259,9531,025,428

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211632
B0198392
C0261102
D0254582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9828420.427350%
B9828240.244200%
C98282182.218152%
D98282252.289377%

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 11139 9829 24 24 0.22% 0.24%
B 11139 9829 4 4 0.04% 0.04%
C 11139 9829 239 239 2.15% 2.43%
D 11139 9829 226 226 2.03% 2.30%

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 10 83 700773 3153.08 1078 1060 221.9
A 9 143 114198 509.83 1078 1060 221.9
A 13 248 60674 268.64 1078 1060 221.9
B 0 186 43382 203.13 1077 1053 208.4
B 0 230 40922 191.32 1077 1053 208.4
B 0 189 26139 120.38 1077 1053 208.4
C 9 187 1016012 4120.89 1047 1059 246.3
C 14 254 678274 2749.61 1047 1059 246.3
C 15 214 396504 1605.58 1047 1059 246.3
D 12 227 932069 3624.93 1039 1012 256.8
D 2 249 470478 1827.8 1039 1012 256.8
D 2 250 275347 1068.08 1039 1012 256.8

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