ASTROSAT CZTI

Data Quality Report

Orbit 38300

Creation date: 2024-06-27T21:50:56.795578
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/AS1A07_145T01_9000005370_38300cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38300cztM0_level2_quad_clean.evt
Size (bytes)545,558,40077,575,680
Size520.3 MB 74.0 MB
Events in quadrant A2,632,608607,034
Events in quadrant B2,586,261619,867
Events in quadrant C2,714,626581,639
Events in quadrant D11,865,278183,556

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108792
B0109911
C0111291
D0386951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A508970.137552%
B5089290.569857%
C5089621.218314%
D5089372073.098841%

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 6911 5090 3 3 0.04% 0.06%
B 6911 5090 16 16 0.23% 0.31%
C 6911 5090 50 50 0.72% 0.98%
D 6911 5090 3994 3994 57.79% 78.47%

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 10 83 331224 2849.98 576 565 116.0
A 12 189 61222 522.81 576 565 116.0
A 13 6 8685 69.99 576 565 116.0
B 5 172 170438 1548.06 574 560 109.7
B 0 183 34538 309.63 574 560 109.7
B 15 85 34083 305.49 574 560 109.7
C 15 214 209687 1607.93 563 567 130.1
C 2 16 201661 1546.22 563 567 130.1
C 14 254 77631 592.55 563 567 130.1
D 10 203 8528944 82246.96 419 405 103.7
D 2 16 860682 8296.28 419 405 103.7
D 12 235 576491 5555.62 419 405 103.7

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