ASTROSAT CZTI

Data Quality Report

Orbit 00645

Creation date: 2024-06-27T14:01:08.513431
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/AS1P01_127T01_9000000090_00645cztM0_level2.evt modeM0/AS1P01_127T01_9000000090_00645cztM0_level2_quad_clean.evt
Size (bytes)801,308,16065,617,920
Size764.2 MB 62.6 MB
Events in quadrant A5,830,635414,644
Events in quadrant B5,899,497410,632
Events in quadrant C5,485,095414,167
Events in quadrant D6,713,453390,260

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209552
B0211322
C0199272
D0235958

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A509360.117809%
B5093110.215983%
C509320.039270%
D50921923.770621%

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 7249 5094 101 101 1.39% 1.98%
B 7249 5094 105 105 1.45% 2.06%
C 7249 5094 33 33 0.46% 0.65%
D 7248 5093 533 533 7.35% 10.47%

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 0 238 30125 87.17 1486 1465 328.8
A 13 160 19085 53.59 1486 1465 328.8
A 0 69 19070 53.55 1486 1465 328.8
B 0 220 65517 181.59 1487 1496 352.6
B 5 249 43886 120.23 1487 1496 352.6
B 0 230 32670 88.42 1487 1496 352.6
C 10 17 9810 21.54 1386 1442 388.5
C 15 241 9573 20.93 1386 1442 388.5
C 5 17 6815 13.83 1386 1442 388.5
D 1 4 538436 1307.65 1312 1364 410.7
D 13 216 243010 588.35 1312 1364 410.7
D 13 221 221259 535.4 1312 1364 410.7

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