ASTROSAT CZTI

Data Quality Report

Orbit 20231212_A13_008T05_9000005996_level2

Creation date: 2023-12-15T13:43:19.106595
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/AS1A13_008T05_9000005996cztM0_level2.fits modeM0/AS1A13_008T05_9000005996cztM0_level2_quad_clean.evt
Size (bytes)881,406,720883,440,000
Size840.6 MB 842.5 MB
Events in quadrant A5,245,6185,200,250
Events in quadrant B5,120,7225,361,025
Events in quadrant C5,249,7725,129,713
Events in quadrant D4,298,7344,293,113

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020140
B020130
C020140
D020140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180510
B02212730
C02216010
D03440560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01290
B01290
C01290
D01290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9875346844.743147%
B9875424312.461672%
C9875320462.071836%
D987491153711.683156%

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 128342 98652 0 0 0.00% 0.00%
B 128342 98708 0 0 0.00% 0.00%
C 128342 98760 0 0 0.00% 0.00%
D 128342 98660 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 4370 8.93 1367 1274 346.7
A 15 236 4159 8.32 1367 1274 346.7
A 0 29 4056 8.02 1367 1274 346.7
B 2 9 4637 12.62 1358 1292 265.0
B 2 8 3785 9.41 1358 1292 265.0
B 3 17 3626 8.81 1358 1292 265.0
C 3 202 3991 7.53 1389 1290 358.6
C 1 81 3963 7.45 1389 1290 358.6
C 1 80 3951 7.42 1389 1290 358.6
D 3 14 3178 5.95 1238 1120 345.7
D 10 189 3144 5.85 1238 1120 345.7
D 10 113 3140 5.84 1238 1120 345.7

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