ASTROSAT CZTI

Data Quality Report

Orbit 11399

Creation date: 2024-06-27T16:12:23.057613
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/AS1A04_022T04_9000001666_11399cztM0_level2.evt modeM0/AS1A04_022T04_9000001666_11399cztM0_level2_quad_clean.evt
Size (bytes)1,060,822,080148,590,720
Size1011.7 MB 141.7 MB
Events in quadrant A8,302,475873,079
Events in quadrant B8,907,657866,623
Events in quadrant C5,980,164966,866
Events in quadrant D8,045,584881,781

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331884
B0352483
C0268973
D0328703

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131856094.618885%
B1318510127.675389%
C131851080.819113%
D131854803.640501%

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 14825 13188 254 254 1.71% 1.93%
B 14825 13188 464 464 3.13% 3.52%
C 14825 13188 0 0 0.00% 0.00%
D 14825 13188 300 300 2.02% 2.27%

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 8 5 1458165 4739.56 1520 1488 307.3
A 13 251 698172 2266.79 1520 1488 307.3
A 1 162 96616 309.52 1520 1488 307.3
B 4 239 2852772 9672.41 1517 1475 294.8
B 15 204 50680 166.92 1517 1475 294.8
B 12 111 33862 109.87 1517 1475 294.8
C 13 61 11156 26.91 1533 1539 357.4
C 12 4 4028 6.96 1533 1539 357.4
C 3 202 3676 5.98 1533 1539 357.4
D 10 253 580041 1617.86 1494 1454 357.6
D 1 52 528217 1472.95 1494 1454 357.6
D 14 34 351351 978.39 1494 1454 357.6

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