ASTROSAT CZTI

Data Quality Report

Orbit 28698

Creation date: 2024-06-27T19:55:04.407710
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/AS1A10_021T04_9000004116_28698cztM0_level2.evt modeM0/AS1A10_021T04_9000004116_28698cztM0_level2_quad_clean.evt
Size (bytes)1,002,263,040161,858,880
Size955.8 MB 154.4 MB
Events in quadrant A5,914,9231,025,599
Events in quadrant B6,826,3591,040,711
Events in quadrant C6,064,1091,004,960
Events in quadrant D10,703,334967,030

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258713
B0285923
C0260043
D0406063

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12490800.640512%
B124913302.641902%
C124902061.649319%
D12490130910.480384%

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 14070 12491 2 2 0.01% 0.02%
B 14071 12491 66 66 0.47% 0.53%
C 14070 12490 4 4 0.03% 0.03%
D 14070 12492 1092 1092 7.76% 8.74%

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 15 174 39243 124.03 1514 1479 304.5
A 13 254 23829 73.4 1514 1479 304.5
A 6 16 20664 63.01 1514 1479 304.5
B 10 245 707581 2451.2 1495 1455 288.1
B 15 33 178910 616.01 1495 1455 288.1
B 12 111 36226 120.7 1495 1455 288.1
C 14 238 258351 752.54 1454 1459 341.4
C 2 16 70927 203.5 1454 1459 341.4
C 14 254 42179 119.29 1454 1459 341.4
D 8 195 2425174 7041.25 1427 1388 344.2
D 7 80 2278444 6614.99 1427 1388 344.2
D 1 52 368498 1066.48 1427 1388 344.2

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