ASTROSAT CZTI

Data Quality Report

Orbit 52980

Creation date: 2025-07-15T10:03:55.155611
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_003T01_9000006486_52980cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52980cztM0_level2_quad_clean.evt
Size (bytes)1,034,032,32086,016,960
Size986.1 MB 82.0 MB
Events in quadrant A18,136,56271,167
Events in quadrant B3,683,841782,780
Events in quadrant C5,818,691654,107
Events in quadrant D10,052,245566,173

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0589270
B0163160
C0226010
D0351070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75467546100.000000%
B75464125.459846%
C754789011.792765%
D7547208027.560620%

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 7615 7546 6505 6505 85.42% 86.20%
B 7616 7548 19 19 0.25% 0.25%
C 7617 7549 523 523 6.87% 6.93%
D 7617 7549 1751 1751 22.99% 23.20%

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 9 191 17581595 636488.77 103 100 27.6
A 0 8 58326 2107.91 103 100 27.6
A 4 249 22190 799.71 103 100 27.6
B 10 63 70594 387.74 837 806 180.0
B 10 128 45358 247.53 837 806 180.0
B 10 254 42157 229.75 837 806 180.0
C 7 80 1260451 5903.56 796 787 213.4
C 4 5 330072 1543.23 796 787 213.4
C 15 224 329410 1540.13 796 787 213.4
D 0 5 3572582 18016.62 706 677 198.3
D 8 176 1538582 7757.16 706 677 198.3
D 2 62 876698 4418.63 706 677 198.3

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