ASTROSAT CZTI

Data Quality Report

Orbit 52903

Creation date: 2025-07-16T17:02:20.956641
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_9000006484_52903cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52903cztM0_level2_quad_clean.evt
Size (bytes)1,011,600,00066,585,600
Size964.7 MB 63.5 MB
Events in quadrant A12,553,702210,593
Events in quadrant B4,498,102654,592
Events in quadrant C11,799,759260,369
Events in quadrant D8,106,389448,974

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0415221
B0176382
C0394451
D0284763

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6322447470.768744%
B63223004.745334%
C6323384160.746481%
D6322165426.162607%

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 7507 6323 4249 4249 56.60% 67.20%
B 7508 6324 147 147 1.96% 2.32%
C 7508 6324 3799 3799 50.60% 60.07%
D 7507 6323 1575 1575 20.98% 24.91%

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 9952114 93903.23 422 413 106.0
A 12 17 203431 1915.66 422 413 106.0
A 12 80 195234 1838.31 422 413 106.0
B 1 255 717712 5144.34 662 640 139.4
B 12 32 698713 5008.04 662 640 139.4
B 5 185 67281 478.09 662 640 139.4
C 15 198 8581872 69215.27 441 437 124.0
C 2 12 747155 6022.8 441 437 124.0
C 7 80 379827 3060.05 441 437 124.0
D 8 176 3299917 19525.82 584 556 169.0
D 10 172 718074 4246.32 584 556 169.0
D 15 174 451701 2669.9 584 556 169.0

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