ASTROSAT CZTI

Data Quality Report

Orbit 08288

Creation date: 2024-06-27T15:30:37.766279
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/AS1T01_163T01_9000001152_08288cztM0_level2.evt modeM0/AS1T01_163T01_9000001152_08288cztM0_level2_quad_clean.evt
Size (bytes)426,484,80060,724,800
Size406.7 MB 57.9 MB
Events in quadrant A3,561,680331,381
Events in quadrant B3,111,023360,883
Events in quadrant C2,883,973355,660
Events in quadrant D2,923,384343,326

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149432
B0132271
C0130521
D0133291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64013114.858616%
B6401420.656147%
C6401110.171848%
D6401130.203093%

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 7351 6402 274 274 3.73% 4.28%
B 7351 6402 4 4 0.05% 0.06%
C 7351 6402 1 1 0.01% 0.02%
D 7351 6402 6 6 0.08% 0.09%

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 767381 5140.78 725 709 149.1
A 0 226 6890 41.45 725 709 149.1
A 12 194 6453 38.52 725 709 149.1
B 0 198 82799 562.07 757 739 146.0
B 0 214 45036 303.41 757 739 146.0
B 10 16 19669 129.66 757 739 146.0
C 9 54 47989 278.29 726 731 169.8
C 13 61 5555 28.4 726 731 169.8
C 5 128 2424 9.97 726 731 169.8
D 8 230 47826 241.92 719 705 194.8
D 12 233 39816 200.8 719 705 194.8
D 7 71 27295 136.51 719 705 194.8

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