ASTROSAT CZTI

Data Quality Report

Orbit 35530

Creation date: 2022-04-25T10:43:48.415808
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/AS1A11_097T09_9000005086_35530cztM0_level2.evt modeM0/AS1A11_097T09_9000005086_35530cztM0_level2_quad_clean.evt
Size (bytes)213,791,04039,064,320
Size203.9 MB 37.3 MB
Events in quadrant A1,447,009245,275
Events in quadrant B1,452,540248,168
Events in quadrant C1,743,350240,312
Events in quadrant D1,620,905229,816

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062732
B063441
C069691
D067931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A308050.162338%
B308050.162338%
C3080391.266234%
D3080260.844156%

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 3080 3080 0 0 0.00% 0.00%
B 3080 3080 2 2 0.06% 0.06%
C 3080 3080 27 27 0.88% 0.88%
D 3080 3080 17 17 0.55% 0.55%

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 10 83 70561 952.07 355 347 73.7
A 3 137 3901 48.19 355 347 73.7
A 13 254 3736 45.95 355 347 73.7
B 5 236 38094 549.3 348 340 68.7
B 3 112 21611 309.48 348 340 68.7
B 12 111 8662 121.08 348 340 68.7
C 0 10 166847 2032.66 342 344 81.9
C 15 214 128664 1566.52 342 344 81.9
C 0 207 73199 889.41 342 344 81.9
D 2 250 88618 1047.1 344 335 84.3
D 8 195 60619 715.01 344 335 84.3
D 12 235 55536 654.73 344 335 84.3

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