ASTROSAT CZTI

Data Quality Report

Orbit 26618

Creation date: 2024-06-27T19:31:03.318439
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_145T01_9000003848_26618cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26618cztM0_level2_quad_clean.evt
Size (bytes)558,253,44084,104,640
Size532.4 MB 80.2 MB
Events in quadrant A3,242,584573,172
Events in quadrant B3,559,005574,505
Events in quadrant C3,117,337545,146
Events in quadrant D6,605,115458,963

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130470
B0146930
C0125970
D0234590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5642420.744417%
B5643480.850611%
C5643601.063264%
D5642171730.432471%

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 6932 5643 0 0 0.00% 0.00%
B 6933 5644 2 2 0.03% 0.04%
C 6933 5644 2 2 0.03% 0.04%
D 6932 5643 1035 1035 14.93% 18.34%

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 13 151088 939.24 799 788 160.0
A 5 168 16268 96.74 799 788 160.0
A 13 254 9047 51.61 799 788 160.0
B 0 189 406503 2792.32 778 762 145.3
B 5 172 49307 334.09 778 762 145.3
B 15 33 31000 208.1 778 762 145.3
C 14 238 121876 698.14 749 756 173.5
C 3 233 38687 218.63 749 756 173.5
C 15 208 36710 207.24 749 756 173.5
D 7 80 3257513 20907.03 640 626 155.8
D 1 52 808468 5185.8 640 626 155.8
D 2 250 54019 342.75 640 626 155.8

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