ASTROSAT CZTI

Data Quality Report

Orbit 26947

Creation date: 2024-06-27T19:34:48.897234
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/AS1A09_134T01_9000003896_26947cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26947cztM0_level2_quad_clean.evt
Size (bytes)859,593,60077,169,600
Size819.8 MB 73.6 MB
Events in quadrant A6,248,871494,499
Events in quadrant B9,593,403417,323
Events in quadrant C2,945,383536,967
Events in quadrant D6,828,434454,976

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228320
B0326850
C0127290
D0244240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6168133821.692607%
B6168292647.438392%
C6168470.761997%
D6168106417.250324%

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 7143 6168 988 988 13.83% 16.02%
B 7143 6168 2408 2408 33.71% 39.04%
C 7143 6169 4 4 0.06% 0.06%
D 7143 6169 1040 1040 14.56% 16.86%

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 14 235 3595679 26813.16 666 654 134.1
A 6 16 53570 394.67 666 654 134.1
A 8 192 23241 168.46 666 654 134.1
B 0 189 6835109 57923.5 623 608 118.0
B 10 245 212120 1792.6 623 608 118.0
B 3 112 35973 299.72 623 608 118.0
C 14 238 113888 678.27 710 716 166.9
C 2 16 31477 184.36 710 716 166.9
C 0 207 16778 96.26 710 716 166.9
D 1 52 2142690 13378.49 666 649 160.1
D 7 80 1055994 6591.34 666 649 160.1
D 11 176 489544 3053.48 666 649 160.1

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