ASTROSAT CZTI

Data Quality Report

Orbit 53464

Creation date: 2025-08-16T13:48:48.677430
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_002T06_9000006496_53464cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53464cztM0_level2_quad_clean.evt
Size (bytes)2,280,888,000231,520,320
Size2.1 GB 220.8 MB
Events in quadrant A19,353,1441,474,967
Events in quadrant B11,583,5961,952,607
Events in quadrant C38,947,530728,779
Events in quadrant D13,053,9391,518,908

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0711672
B0481072
C01286222
D0531052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19354372119.226000%
B193555072.619478%
C193551180060.966159%
D1935511195.781452%

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 20379 19356 2900 2900 14.23% 14.98%
B 20380 19357 138 138 0.68% 0.71%
C 20380 19357 10987 10987 53.91% 56.76%
D 20380 19357 943 943 4.63% 4.87%

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 15 174 7760617 16377.81 1928 1883 473.7
A 3 63 1779394 3752.12 1928 1883 473.7
A 3 62 1469087 3097.1 1928 1883 473.7
B 4 171 1525285 3429.86 2069 1991 444.1
B 2 249 454456 1018.77 2069 1991 444.1
B 10 28 318750 713.22 2069 1991 444.1
C 1 241 20330566 57243.8 1299 1288 355.1
C 15 224 3088618 8693.4 1299 1288 355.1
C 15 158 2965129 8345.67 1299 1288 355.1
D 8 176 1656904 3006.35 1968 1887 550.5
D 3 12 1239175 2247.54 1968 1887 550.5
D 2 153 908383 1646.66 1968 1887 550.5

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