ASTROSAT CZTI

Data Quality Report

Orbit 31913

Creation date: 2024-06-27T20:34:07.834773
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_123T09_9000004654_31913cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31913cztM0_level2_quad_clean.evt
Size (bytes)346,561,92048,329,280
Size330.5 MB 46.1 MB
Events in quadrant A1,718,624325,579
Events in quadrant B2,984,978312,473
Events in quadrant C2,381,050301,721
Events in quadrant D3,183,853286,327

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07294179
B011313330
C09550188
D012471590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0711
B0711
C0724
D0711

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0111
C0100
D0111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3351451.342883%
B33321564.681873%
C33431905.683518%
D332134810.478771%

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 4530 3367 0 0 0.00% 0.00%
B 4537 3360 57 57 1.26% 1.70%
C 4531 3366 27 27 0.60% 0.80%
D 4532 3346 319 319 7.04% 9.53%

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 13 254 6426 66.14 444 434 90.6
A 3 137 4248 42.1 444 434 90.6
A 0 226 3761 36.73 444 434 90.6
B 6 159 914981 11017.76 431 420 83.0
B 4 80 201122 2417.87 431 420 83.0
B 5 255 54819 655.35 431 420 83.0
C 3 233 428885 4405.67 413 417 97.3
C 0 10 229077 2351.17 413 417 97.3
C 14 238 74183 758.49 413 417 97.3
D 12 33 822814 8269.5 416 406 99.5
D 8 195 586290 5891.2 416 406 99.5
D 13 249 111602 1118.1 416 406 99.5

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