ASTROSAT CZTI

Data Quality Report

Orbit 09975

Creation date: 2024-06-27T15:53:13.301654
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/AS1G07_074T01_9000001426_09975cztM0_level2.evt modeM0/AS1G07_074T01_9000001426_09975cztM0_level2_quad_clean.evt
Size (bytes)175,656,96032,595,840
Size167.5 MB 31.1 MB
Events in quadrant A1,669,125203,052
Events in quadrant B1,193,282209,935
Events in quadrant C1,022,993209,791
Events in quadrant D1,278,325200,467

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064583
B050402
C046622
D053252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22601556.858407%
B2260391.725664%
C2260190.840708%
D2260261.150442%

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 3175 2261 113 113 3.56% 5.00%
B 3175 2261 9 9 0.28% 0.40%
C 3175 2262 0 0 0.00% 0.00%
D 3175 2262 4 4 0.13% 0.18%

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 13 251 630396 11056.69 266 260 57.0
A 15 174 11958 205.26 266 260 57.0
A 0 226 2354 36.74 266 260 57.0
B 4 239 61946 1119.57 272 265 55.1
B 11 51 23243 417.07 272 265 55.1
B 0 189 13600 242.04 272 265 55.1
C 13 61 1963 27.27 261 262 62.4
C 14 67 847 9.38 261 262 62.4
C 12 4 781 8.32 261 262 62.4
D 1 52 100628 1537.85 261 253 65.3
D 2 33 56637 863.86 261 253 65.3
D 8 195 50603 771.41 261 253 65.3

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