ASTROSAT CZTI

Data Quality Report

Orbit 41811

Creation date: 2024-06-27T22:33:07.434854
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/AS1A12_093T02_9000005704_41811cztM0_level2.fits modeM0/AS1A12_093T02_9000005704_41811cztM0_level2_quad_clean.evt
Size (bytes)86,351,04021,162,240
Size82.4 MB 20.2 MB
Events in quadrant A791,346144,304
Events in quadrant B611,358146,354
Events in quadrant C970,068125,798
Events in quadrant D721,621128,656

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030951
B026361
C035731
D029602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127490.706436%
B127460.470958%
C127412810.047096%
D1273241.885310%

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 3035 1275 4 4 0.13% 0.31%
B 3035 1274 1 1 0.03% 0.08%
C 3035 1274 128 128 4.22% 10.05%
D 3035 1274 18 18 0.59% 1.41%

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 194307 5969.65 147 143 32.5
A 12 189 11315 343.49 147 143 32.5
A 13 248 6879 207.1 147 143 32.5
B 4 171 25186 824.39 145 140 30.4
B 5 255 6647 214.18 145 140 30.4
B 0 186 5130 164.25 145 140 30.4
C 0 10 406404 12457.53 131 131 32.6
C 15 214 50923 1557.43 131 131 32.6
C 13 61 886 23.15 131 131 32.6
D 2 249 102659 2754.95 143 138 37.2
D 12 79 44380 1188.87 143 138 37.2
D 12 218 10035 265.95 143 138 37.2

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