ASTROSAT CZTI

Data Quality Report

Orbit 52052

Creation date: 2025-05-13T10:57:48.491918
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/AS1C09_011T06_9000006468_52052cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52052cztM0_level2_quad_clean.evt
Size (bytes)1,045,684,80053,985,600
Size997.2 MB 51.5 MB
Events in quadrant A3,814,675578,372
Events in quadrant B12,894,11320,522
Events in quadrant C4,372,160565,593
Events in quadrant D17,118,90512,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016668606
B0449972249
C018470751
D0580972766

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01388
B01366
C01375
D01397

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66002363.575758%
B6525633797.118774%
C65763134.759732%
D6520640198.174847%

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 6650 6633 213 213 3.20% 3.21%
B 6630 6552 3349 3349 50.51% 51.11%
C 6648 6611 251 251 3.78% 3.80%
D 6630 6537 6218 6218 93.79% 95.12%

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 3 95 556288 3379.55 653 636 164.4
A 4 3 209912 1272.84 653 636 164.4
A 5 240 91335 551.64 653 636 164.4
B 12 32 11072237 533360.73 89 86 20.8
B 8 3 1358890 65455.46 89 86 20.8
B 10 254 30277 1454.34 89 86 20.8
C 15 224 879893 4885.23 644 639 180.0
C 1 242 487763 2706.51 644 639 180.0
C 13 3 168414 932.18 644 639 180.0
D 15 94 10727745 168730.91 205 194 63.6
D 6 42 2326862 36595.57 205 194 63.6
D 12 1 1038607 16332.93 205 194 63.6

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