ASTROSAT CZTI

Data Quality Report

Orbit 08269

Creation date: 2024-06-27T15:30:22.525798
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/AS1G06_136T01_9000001148_08269cztM0_level2.evt modeM0/AS1G06_136T01_9000001148_08269cztM0_level2_quad_clean.evt
Size (bytes)156,015,36038,306,880
Size148.8 MB 36.5 MB
Events in quadrant A1,083,692244,925
Events in quadrant B1,162,080249,160
Events in quadrant C1,146,588248,723
Events in quadrant D1,163,908241,147

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049950
B051330
C051240
D051870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A244750.204332%
B244780.326931%
C2447100.408664%
D2447130.531263%

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 2447 2447 0 0 0.00% 0.00%
B 2447 2447 1 1 0.04% 0.04%
C 2447 2447 8 8 0.33% 0.33%
D 2447 2447 14 14 0.57% 0.57%

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 0 254 9786 159.83 279 272 59.5
A 0 226 2563 38.49 279 272 59.5
A 12 194 2473 36.97 279 272 59.5
B 11 51 32375 568.08 284 276 56.5
B 4 81 14588 253.29 284 276 56.5
B 0 214 6341 107.34 284 276 56.5
C 9 54 57425 856.92 279 280 66.7
C 13 61 2064 26.75 279 280 66.7
C 3 202 681 6.01 279 280 66.7
D 1 52 36767 534.76 276 269 68.3
D 13 105 34867 506.92 276 269 68.3
D 2 152 25945 376.2 276 269 68.3

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