ASTROSAT CZTI

Data Quality Report

Orbit 09962

Creation date: 2024-06-27T15:53:03.191632
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_047T01_9000001424_09962cztM0_level2.evt modeM0/AS1G07_047T01_9000001424_09962cztM0_level2_quad_clean.evt
Size (bytes)1,280,327,040196,807,680
Size1.2 GB 187.7 MB
Events in quadrant A7,871,1441,200,124
Events in quadrant B8,689,0221,225,068
Events in quadrant C7,732,4301,223,753
Events in quadrant D13,307,5141,112,790

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0356454
B0375413
C0354533
D0515413

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03540
B03540
C03540
D03540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17384830.477451%
B173842211.271284%
C17384640.368155%
D173849195.286470%

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 19504 17387 7 7 0.04% 0.04%
B 19504 17386 77 77 0.39% 0.44%
C 19504 17386 0 0 0.00% 0.00%
D 19504 17385 749 749 3.84% 4.31%

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 27484 62.25 2021 1975 409.8
A 15 239 20254 44.61 2021 1975 409.8
A 14 111 18985 41.51 2021 1975 409.8
B 4 81 309237 791.42 2042 1993 388.2
B 0 214 118625 300.43 2042 1993 388.2
B 0 219 116689 295.44 2042 1993 388.2
C 13 61 14708 27.68 1978 1989 459.6
C 14 67 7635 12.29 1978 1989 459.6
C 8 222 7002 10.91 1978 1989 459.6
D 1 52 2864802 5952.7 1906 1859 480.9
D 8 195 879615 1825.05 1906 1859 480.9
D 2 16 634020 1314.4 1906 1859 480.9

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