ASTROSAT CZTI

Data Quality Report

Orbit 28770

Creation date: 2024-06-27T19:56:05.194382
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/AS1C05_019T04_9000004130_28770cztM0_level2.evt modeM0/AS1C05_019T04_9000004130_28770cztM0_level2_quad_clean.evt
Size (bytes)1,553,316,480283,579,200
Size1.4 GB 270.4 MB
Events in quadrant A8,429,8011,893,308
Events in quadrant B9,368,9971,917,741
Events in quadrant C11,040,9651,825,436
Events in quadrant D16,971,1371,693,801

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0372323
B0399073
C0457323
D0632183

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18257850.465575%
B182573782.070439%
C182574532.481240%
D18258209611.479899%

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 20087 18260 4 4 0.02% 0.02%
B 20087 18258 225 225 1.12% 1.23%
C 20087 18258 6 6 0.03% 0.03%
D 20088 18258 1813 1813 9.03% 9.93%

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 15 174 39474 86.42 2158 2108 432.4
A 13 254 32731 70.83 2158 2108 432.4
A 13 6 31547 68.09 2158 2108 432.4
B 4 80 863100 2141.1 2128 2079 402.1
B 5 255 66359 159.85 2128 2079 402.1
B 12 111 50887 121.37 2128 2079 402.1
C 3 233 2516937 5256.21 2058 2072 478.5
C 14 238 361507 751.24 2058 2072 478.5
C 14 254 49445 99.01 2058 2072 478.5
D 1 52 5115526 10787.95 1989 1933 474.0
D 8 195 3424405 7220.25 1989 1933 474.0
D 12 233 445488 935.75 1989 1933 474.0

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