ASTROSAT CZTI

Data Quality Report

Orbit 51552

Creation date: 2025-04-09T18:11:03.467626
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_037T05_9000006460_51552cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51552cztM0_level2_quad_clean.evt
Size (bytes)756,564,48079,992,000
Size721.5 MB 76.3 MB
Events in quadrant A13,164,400230,183
Events in quadrant B6,524,862600,491
Events in quadrant C3,242,717601,003
Events in quadrant D4,579,857545,723

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0434817
B0237721
C0142811
D0179191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6370414865.117739%
B637098015.384615%
C63701302.040816%
D63712974.661749%

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 7444 6369 3990 3990 53.60% 62.65%
B 7445 6370 753 753 10.11% 11.82%
C 7445 6370 73 73 0.98% 1.15%
D 7446 6371 244 244 3.28% 3.83%

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 15 32 9049957 86402.14 423 413 104.7
A 12 3 1632189 15579.67 423 413 104.7
A 12 194 198586 1892.09 423 413 104.7
B 10 44 2739053 19299.77 670 646 141.9
B 0 171 300986 2116.74 670 646 141.9
B 1 207 149072 1046.08 670 646 141.9
C 13 3 391197 2070.74 689 683 188.6
C 3 233 39161 204.03 689 683 188.6
C 14 245 15644 79.33 689 683 188.6
D 8 176 769929 4068.59 674 649 189.1
D 12 6 306737 1618.85 674 649 189.1
D 6 42 254620 1343.21 674 649 189.1

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