ASTROSAT CZTI

Data Quality Report

Orbit 54154

Creation date: 2025-10-01T22:34:40.477053
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/AS1A14_012T01_9000006512_54154cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54154cztM0_level2_quad_clean.evt
Size (bytes)473,451,84087,131,520
Size451.5 MB 83.1 MB
Events in quadrant A5,350,797510,782
Events in quadrant B3,427,001646,928
Events in quadrant C2,858,580581,476
Events in quadrant D5,400,118460,515

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203711
B0147351
C0131302
D0205011

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6282111817.796880%
B62832013.199109%
C6282520.827762%
D6282104716.666667%

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 7332 6282 741 741 10.11% 11.80%
B 7333 6284 77 77 1.05% 1.23%
C 7332 6283 4 4 0.05% 0.06%
D 7332 6283 649 649 8.85% 10.33%

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 7 29 2161677 14639.07 593 579 147.6
A 4 249 342630 2317.02 593 579 147.6
A 15 174 324271 2192.66 593 579 147.6
B 4 171 193829 1397.71 654 631 138.2
B 6 255 148679 1071.07 654 631 138.2
B 10 245 125364 902.39 654 631 138.2
C 3 242 85295 473.74 652 644 178.7
C 1 241 58441 323.46 652 644 178.7
C 12 252 51601 285.18 652 644 178.7
D 8 176 2088441 12804.85 572 545 163.1
D 10 181 547682 3355.53 572 545 163.1
D 3 12 179844 1099.62 572 545 163.1

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