ASTROSAT CZTI

Data Quality Report

Orbit 00183

Creation date: 2024-06-27T13:57:40.508363
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_136T01_9000000014_00183cztM0_level2.evt modeM0/AS1P01_136T01_9000000014_00183cztM0_level2_quad_clean.evt
Size (bytes)858,306,24046,923,840
Size818.5 MB 44.8 MB
Events in quadrant A6,692,138261,883
Events in quadrant B6,664,198271,159
Events in quadrant C6,082,226264,583
Events in quadrant D6,208,175256,381

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236922
B0236471
C0219251
D0222681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5246390.743424%
B5272180.341426%
C529540.075543%
D5123460.897911%

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 6936 5248 274 274 3.95% 5.22%
B 6936 5275 171 171 2.47% 3.24%
C 6936 5298 53 53 0.76% 1.00%
D 6936 5126 215 215 3.10% 4.19%

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 7 128 131083 347.31 1666 1647 372.7
A 14 10 59335 154.79 1666 1647 372.7
A 0 253 13717 32.39 1666 1647 372.7
B 10 199 70192 174.36 1670 1680 392.9
B 3 204 55587 137.19 1670 1680 392.9
B 0 247 27496 65.7 1670 1680 392.9
C 0 188 24479 53.01 1532 1588 431.8
C 0 202 12701 25.74 1532 1588 431.8
C 10 33 8164 15.23 1532 1588 431.8
D 13 89 153972 335.33 1475 1523 454.6
D 12 249 58865 126.13 1475 1523 454.6
D 12 14 58047 124.33 1475 1523 454.6

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