ASTROSAT CZTI

Data Quality Report

Orbit 08262

Creation date: 2024-06-27T15:30:16.508868
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/AS1G06_136T01_9000001148_08262cztM0_level2.evt modeM0/AS1G06_136T01_9000001148_08262cztM0_level2_quad_clean.evt
Size (bytes)623,321,28074,822,400
Size594.4 MB 71.4 MB
Events in quadrant A7,799,506382,040
Events in quadrant B3,315,923482,305
Events in quadrant C3,141,274481,325
Events in quadrant D4,172,089457,955

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275353
B0138282
C0135942
D0166812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6620182827.613293%
B6620801.208459%
C6620420.634441%
D66202153.247734%

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 7745 6620 1522 1522 19.65% 22.99%
B 7745 6620 1 1 0.01% 0.02%
C 7745 6620 0 0 0.00% 0.00%
D 7745 6620 133 133 1.72% 2.01%

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 0 128 5074837 35499.23 705 689 142.9
A 13 248 9152 59.21 705 689 142.9
A 0 226 6680 41.91 705 689 142.9
B 11 51 34326 209.79 832 814 159.7
B 12 111 17625 105.24 832 814 159.7
B 0 214 16886 100.61 832 814 159.7
C 13 61 6114 28.52 804 810 186.0
C 12 4 3189 12.79 804 810 186.0
C 3 202 2023 6.52 804 810 186.0
D 1 52 822748 4301.32 804 786 191.1
D 2 136 141648 737.13 804 786 191.1
D 7 71 70729 366.01 804 786 191.1

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