ASTROSAT CZTI

Data Quality Report

Orbit 07449

Creation date: 2024-06-27T15:19:54.034606
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/AS1A02_108T01_9000001024_07449cztM0_level2.evt modeM0/AS1A02_108T01_9000001024_07449cztM0_level2_quad_clean.evt
Size (bytes)1,057,838,400161,645,760
Size1008.8 MB 154.2 MB
Events in quadrant A6,807,754982,826
Events in quadrant B6,795,964997,348
Events in quadrant C9,538,831963,274
Events in quadrant D7,903,188939,924

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980
B02980
C02980
D02980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303243
B0299242
C0380672
D0331892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A146571220.832367%
B146571390.948352%
C146571591.084806%
D146572501.705670%

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 16132 14658 0 0 0.00% 0.00%
B 16132 14659 5 5 0.03% 0.03%
C 16132 14658 3 3 0.02% 0.02%
D 16132 14658 107 107 0.66% 0.73%

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 15 234 284750 826.58 1684 1644 342.5
A 3 1 18649 49.65 1684 1644 342.5
A 0 226 15917 41.67 1684 1644 342.5
B 0 214 156243 478.63 1701 1656 323.0
B 12 111 33534 98.7 1701 1656 323.0
B 11 111 26994 78.45 1701 1656 323.0
C 9 68 3111593 8175.94 1640 1644 380.4
C 13 61 12554 28.68 1640 1644 380.4
C 8 128 10744 23.92 1640 1644 380.4
D 13 105 490946 1219.5 1639 1587 401.3
D 2 14 365016 905.68 1639 1587 401.3
D 1 20 332139 823.75 1639 1587 401.3

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