ASTROSAT CZTI

Data Quality Report

Orbit 03974

Creation date: 2024-06-27T14:36:17.100446
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/AS1SLEW_01234_9000000509_03974cztM0_level2.evt modeM0/AS1SLEW_01234_9000000509_03974cztM0_level2_quad_clean.evt
Size (bytes)86,008,32021,741,120
Size82.0 MB 20.7 MB
Events in quadrant A656,979140,587
Events in quadrant B647,517139,181
Events in quadrant C568,743140,576
Events in quadrant D637,161137,167

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029090
B027900
C027110
D029100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134630.222883%
B134630.222883%
C134600.000000%
D1346100.742942%

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 1346 1346 4 4 0.30% 0.30%
B 1346 1346 1 1 0.07% 0.07%
C 1346 1346 0 0 0.00% 0.00%
D 1346 1346 10 10 0.74% 0.74%

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 0 50 74522 2297.76 147 144 32.4
A 0 118 8024 243.44 147 144 32.4
A 13 210 2688 78.59 147 144 32.4
B 14 167 33494 1054.18 151 147 31.6
B 15 204 16436 514.94 151 147 31.6
B 3 0 8605 267.38 151 147 31.6
C 9 144 5650 154.84 143 144 35.6
C 13 61 1243 30.91 143 144 35.6
C 4 112 388 6.86 143 144 35.6
D 2 232 24497 676.4 140 136 36.0
D 12 233 23124 638.28 140 136 36.0
D 13 239 22997 634.75 140 136 36.0

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