ASTROSAT CZTI

Data Quality Report

Orbit 53697

Creation date: 2025-09-01T06:36:57.121891
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_022T05_9000006504_53697cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53697cztM0_level2_quad_clean.evt
Size (bytes)2,847,781,440184,273,920
Size2.7 GB 175.7 MB
Events in quadrant A42,330,009460,920
Events in quadrant B10,753,2891,787,615
Events in quadrant C34,436,681654,286
Events in quadrant D16,461,9371,390,343

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01386283
B0455893
C01150703
D0620883

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186321429676.728210%
B186335613.010787%
C186331206664.756078%
D18633197410.594107%

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 20212 18632 14299 14299 70.75% 76.74%
B 20213 18635 343 343 1.70% 1.84%
C 20213 18633 9511 9511 47.05% 51.04%
D 20213 18635 2028 2028 10.03% 10.88%

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 63 31597252 106403.98 1190 1159 296.9
A 3 78 4497478 15141.94 1190 1159 296.9
A 14 254 320745 1076.25 1190 1159 296.9
B 5 185 1457895 3533.07 1927 1859 412.1
B 4 81 576280 1393.83 1927 1859 412.1
B 7 0 312798 754.49 1927 1859 412.1
C 15 224 14373831 42126.06 1224 1215 341.2
C 1 241 4280283 12541.93 1224 1215 341.2
C 15 158 2426784 7109.33 1224 1215 341.2
D 8 176 2294518 4374.88 1826 1741 524.1
D 1 241 1819672 3468.82 1826 1741 524.1
D 7 70 1497753 2854.56 1826 1741 524.1

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