ASTROSAT CZTI

Data Quality Report

Orbit 06701

Creation date: 2024-06-27T15:10:33.073329
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_145T01_9000000916_06701cztM0_level2.evt modeM0/AS1T01_145T01_9000000916_06701cztM0_level2_quad_clean.evt
Size (bytes)592,862,400111,862,080
Size565.4 MB 106.7 MB
Events in quadrant A3,026,665796,851
Events in quadrant B3,283,300812,463
Events in quadrant C2,738,292786,825
Events in quadrant D8,484,783556,857

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132543
B0140012
C0126402
D0294282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6220590.948553%
B62201161.864952%
C6220110.176849%
D6220223635.948553%

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 7520 6221 10 10 0.13% 0.16%
B 7520 6221 38 38 0.51% 0.61%
C 7520 6221 0 0 0.00% 0.00%
D 7520 6221 1905 1905 25.33% 30.62%

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 8 15 205035 1392.47 724 709 146.7
A 14 111 24697 163.48 724 709 146.7
A 0 226 7224 44.4 724 709 146.7
B 4 80 241386 1733.2 736 719 138.9
B 0 219 70029 499.15 736 719 138.9
B 0 214 28136 197.45 736 719 138.9
C 13 61 5703 30.94 699 702 161.6
C 8 128 3732 18.75 699 702 161.6
C 9 54 3153 15.16 699 702 161.6
D 2 33 5679796 42254.25 543 523 134.4
D 2 152 236216 1753.57 543 523 134.4
D 8 195 159818 1185.17 543 523 134.4

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