ASTROSAT CZTI

Data Quality Report

Orbit 52948

Creation date: 2025-07-17T08:53:51.655842
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_52948cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52948cztM0_level2_quad_clean.evt
Size (bytes)796,760,64064,555,200
Size759.9 MB 61.6 MB
Events in quadrant A14,136,79351,027
Events in quadrant B2,738,135617,079
Events in quadrant C6,922,377399,581
Events in quadrant D5,244,812480,797

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0459441
B0122531
C0244678
D0194781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5817541293.037648%
B58171172.011346%
C5816157827.132050%
D58165429.319120%

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 6951 5816 5035 5035 72.44% 86.57%
B 6952 5817 7 7 0.10% 0.12%
C 6950 5815 1416 1416 20.37% 24.35%
D 6951 5816 458 458 6.59% 7.87%

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 12822041 172411.01 295 287 74.4
A 12 17 64940 869.37 295 287 74.4
A 3 78 23562 312.97 295 287 74.4
B 10 247 71115 516.67 634 611 136.5
B 0 171 25094 179.42 634 611 136.5
B 4 81 22192 158.15 634 611 136.5
C 10 171 2981157 19841.29 543 537 150.2
C 2 239 745020 4955.85 543 537 150.2
C 4 5 463329 3080.7 543 537 150.2
D 8 176 1567595 9046.66 603 574 173.2
D 15 78 362826 2091.34 603 574 173.2
D 6 42 209011 1203.34 603 574 173.2

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