ASTROSAT CZTI

Data Quality Report

Orbit 34862

Creation date: 2022-07-18T19:43:13.341143
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/AS1C07_005T01_9000004992_34862cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34862cztM0_level2_quad_clean.evt
Size (bytes)1,321,908,48073,264,320
Size1.2 GB 69.9 MB
Events in quadrant A13,012,488341,964
Events in quadrant B15,435,740252,748
Events in quadrant C3,666,178638,033
Events in quadrant D7,517,757560,071

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0427363
B0499402
C0144322
D0265342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6026469377.879190%
B6026601099.734484%
C60261362.256887%
D6026115719.200133%

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 7338 6027 4435 4435 60.44% 73.59%
B 7337 6025 5886 5886 80.22% 97.69%
C 7338 6027 115 115 1.57% 1.91%
D 7338 6027 1143 1143 15.58% 18.96%

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 15 169 11264843 132206.74 421 413 85.2
A 15 237 65541 764.38 421 413 85.2
A 10 83 39932 463.82 421 413 85.2
B 5 31 6372532 109661.93 298 290 58.1
B 5 15 5807723 99941.95 298 290 58.1
B 5 14 1644910 28302.79 298 290 58.1
C 0 207 464311 3009.26 665 668 154.1
C 15 214 275085 1781.09 665 668 154.1
C 0 10 211456 1368.11 665 668 154.1
D 12 227 3184768 20498.75 634 618 155.3
D 8 195 513279 3300.38 634 618 155.3
D 2 249 288454 1853.01 634 618 155.3

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