ASTROSAT CZTI

Data Quality Report

Orbit 06980

Creation date: 2024-06-27T15:14:01.345817
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_090T02_9000000956_06980cztM0_level2.evt modeM0/AS1A02_090T02_9000000956_06980cztM0_level2_quad_clean.evt
Size (bytes)760,276,800136,825,920
Size725.1 MB 130.5 MB
Events in quadrant A5,431,616836,673
Events in quadrant B5,629,283843,279
Events in quadrant C5,285,403842,675
Events in quadrant D5,889,628816,006

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024784576
B025197597
C024504583
D025702578

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02424
B02426
C02424
D02426

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116461371.176370%
B116341921.650335%
C116351171.005587%
D116411461.254188%

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 13100 11679 4 4 0.03% 0.03%
B 13102 11664 22 22 0.17% 0.19%
C 13087 11664 0 0 0.00% 0.00%
D 13102 11668 16 16 0.12% 0.14%

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 14 239 69458 241.54 1380 1347 282.0
A 13 248 14119 45.29 1380 1347 282.0
A 0 226 13881 44.45 1380 1347 282.0
B 0 228 164772 613.55 1387 1350 266.4
B 12 111 26237 93.44 1387 1350 266.4
B 11 111 21014 73.83 1387 1350 266.4
C 13 61 10745 29.79 1350 1354 315.2
C 1 16 9550 26.0 1350 1354 315.2
C 12 4 4186 8.98 1350 1354 315.2
D 8 195 544064 1633.0 1351 1308 332.4
D 12 233 76048 224.87 1351 1308 332.4
D 2 14 46266 135.27 1351 1308 332.4

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