ASTROSAT CZTI

Data Quality Report

Orbit 51319

Creation date: 2025-03-25T00:18:43.245978
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/AS1C07_001T03_9000006456_51319cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51319cztM0_level2_quad_clean.evt
Size (bytes)731,214,72086,063,040
Size697.3 MB 82.1 MB
Events in quadrant A6,470,452593,312
Events in quadrant B4,445,871650,679
Events in quadrant C9,203,147404,641
Events in quadrant D6,452,207510,026

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238172
B0176232
C0317952
D0236772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64074246.617762%
B64074336.758233%
C6407232336.257219%
D640785613.360387%

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 7548 6409 275 275 3.64% 4.29%
B 7548 6409 255 255 3.38% 3.98%
C 7548 6409 2118 2118 28.06% 33.05%
D 7548 6409 690 690 9.14% 10.77%

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 12 3 2302315 13894.62 670 653 165.7
A 4 175 292090 1759.34 670 653 165.7
A 12 194 269155 1620.88 670 653 165.7
B 5 185 676040 4730.91 674 651 142.8
B 8 128 348970 2439.87 674 651 142.8
B 10 247 201877 1409.53 674 651 142.8
C 4 12 5647550 39665.74 510 506 142.4
C 3 233 557467 3912.18 510 506 142.4
C 15 1 212172 1486.78 510 506 142.4
D 11 245 857149 4888.99 632 611 175.2
D 12 128 562974 3209.88 632 611 175.2
D 7 80 452506 2579.35 632 611 175.2

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