ASTROSAT CZTI

Data Quality Report

Orbit 44776

Creation date: 2024-06-27T23:06:23.084879
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/AS1A13_004T12_9000006020_44776cztM0_level2.fits modeM0/AS1A13_004T12_9000006020_44776cztM0_level2_quad_clean.evt
Size (bytes)647,366,400103,118,400
Size617.4 MB 98.3 MB
Events in quadrant A9,642,787600,873
Events in quadrant B4,438,899735,193
Events in quadrant C3,084,215727,111
Events in quadrant D6,290,528601,888

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332121
B0175521
C0138761
D0232381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6546173826.550565%
B65463375.148182%
C6547380.580419%
D654782212.555369%

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 7666 6547 1462 1462 19.07% 22.33%
B 7666 6547 222 222 2.90% 3.39%
C 7667 6548 22 22 0.29% 0.34%
D 7667 6548 680 680 8.87% 10.38%

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 15 223 4880862 35186.41 670 655 138.7
A 10 83 1962443 14144.54 670 655 138.7
A 13 248 169060 1214.2 670 655 138.7
B 0 189 1062056 7427.9 724 702 142.9
B 5 255 224302 1564.87 724 702 142.9
B 0 219 71522 495.63 724 702 142.9
C 14 254 123867 729.67 723 726 168.8
C 12 250 82824 486.47 723 726 168.8
C 12 249 34796 201.88 723 726 168.8
D 13 174 1539581 8884.04 690 667 173.2
D 13 249 577433 3329.63 690 667 173.2
D 5 235 515118 2969.89 690 667 173.2

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