ASTROSAT CZTI

Data Quality Report

Orbit 52535

Creation date: 2025-06-14T23:41:11.917088
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_9000006478_52535cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52535cztM0_level2_quad_clean.evt
Size (bytes)2,162,940,480221,875,200
Size2.0 GB 211.6 MB
Events in quadrant A10,952,8671,647,829
Events in quadrant B11,838,9741,757,956
Events in quadrant C20,630,9291,269,684
Events in quadrant D35,220,620769,778

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0457113
B0475693
C0743113
D01174143

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184448774.754934%
B184448934.841683%
C18445394521.387910%
D18445973352.767688%

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 19709 18448 586 586 2.97% 3.18%
B 19709 18448 456 456 2.31% 2.47%
C 19710 18449 3139 3139 15.93% 17.01%
D 19710 18448 8866 8866 44.98% 48.06%

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 46 1456496 3051.84 1929 1880 476.6
A 5 243 435654 910.07 1929 1880 476.6
A 3 45 223428 464.82 1929 1880 476.6
B 12 32 1642548 4106.88 1903 1833 399.5
B 10 44 647392 1615.9 1903 1833 399.5
B 4 21 558057 1392.28 1903 1833 399.5
C 15 224 4276455 9134.39 1702 1690 468.0
C 12 254 4187505 8944.32 1702 1690 468.0
C 15 248 1305814 2786.68 1702 1690 468.0
D 6 42 15984353 38583.44 1437 1368 414.2
D 12 17 2206472 5323.19 1437 1368 414.2
D 8 176 2090852 5044.08 1437 1368 414.2

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