ASTROSAT CZTI

Data Quality Report

Orbit 27572

Creation date: 2024-06-27T19:41:39.537575
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_038T24_9000003968_27572cztM0_level2.evt modeM0/AS1A09_038T24_9000003968_27572cztM0_level2_quad_clean.evt
Size (bytes)316,422,72076,824,000
Size301.8 MB 73.3 MB
Events in quadrant A2,168,390508,918
Events in quadrant B2,297,781524,026
Events in quadrant C2,224,947499,004
Events in quadrant D2,585,252478,489

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093690
B097950
C094010
D0107360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4494170.378282%
B4494230.511794%
C4494420.934579%
D4493360.801246%

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 5694 4495 4 4 0.07% 0.09%
B 5694 4495 0 0 0.00% 0.00%
C 5694 4495 0 0 0.00% 0.00%
D 5693 4494 36 36 0.63% 0.80%

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 8 192 9964 84.4 558 546 111.6
A 13 254 7096 58.7 558 546 111.6
A 3 137 5180 41.53 558 546 111.6
B 3 64 46127 426.76 563 549 106.8
B 0 230 16002 144.69 563 549 106.8
B 12 111 12655 113.35 563 549 106.8
C 14 238 89426 701.12 546 550 126.8
C 13 61 3635 24.34 546 550 126.8
C 4 175 3091 20.05 546 550 126.8
D 1 52 300260 2335.85 542 527 128.3
D 6 112 130160 1010.24 542 527 128.3
D 2 250 88653 686.78 542 527 128.3

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