ASTROSAT CZTI

Data Quality Report

Orbit 54612

Creation date: 2025-11-01T20:02:18.088403
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_066T07_9000006522_54612cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54612cztM0_level2_quad_clean.evt
Size (bytes)1,482,793,920271,961,280
Size1.4 GB 259.4 MB
Events in quadrant A15,195,2131,778,840
Events in quadrant B17,015,2241,675,017
Events in quadrant C10,185,7101,753,247
Events in quadrant D10,935,7281,640,786

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590623
B0646994
C0444173
D0470773

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04080
B04080
C04080
D04080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2011812326.123869%
B20117316315.723020%
C201173681.829299%
D201174852.410896%

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 21193 20119 699 699 3.30% 3.47%
B 21192 20118 2343 2343 11.06% 11.65%
C 21192 20118 80 80 0.38% 0.40%
D 21192 20118 220 220 1.04% 1.09%

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 14 4611074 8632.19 2162 2107 533.9
A 11 3 777193 1451.67 2162 2107 533.9
A 0 8 572278 1067.88 2162 2107 533.9
B 5 172 7555753 17476.63 2014 1940 432.2
B 10 28 691703 1595.85 2014 1940 432.2
B 1 207 412104 948.96 2014 1940 432.2
C 4 5 559793 962.31 2134 2120 579.5
C 6 223 252306 431.72 2134 2120 579.5
C 12 252 194636 332.2 2134 2120 579.5
D 2 62 734751 1213.64 2139 2048 603.7
D 2 207 239843 393.88 2139 2048 603.7
D 3 144 239813 393.83 2139 2048 603.7

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