ASTROSAT CZTI

Data Quality Report

Orbit 59038

Creation date: 2026-08-28T00:16:13.940368
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_004T02_9000006600_59038cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59038cztM0_level2_quad_clean.evt
Size (bytes)779,235,84083,874,240
Size743.1 MB 80.0 MB
Events in quadrant A4,053,296662,433
Events in quadrant B3,947,340693,574
Events in quadrant C3,472,715640,866
Events in quadrant D16,840,88966,935

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166712
B0164072
C0151862
D0546612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68222293.356787%
B68223835.614189%
C68221361.993550%
D6822617190.457344%

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 7667 6823 98 98 1.28% 1.44%
B 7667 6823 136 136 1.77% 1.99%
C 7667 6823 18 18 0.23% 0.26%
D 7666 6822 5835 5835 76.12% 85.53%

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 15 233 410930 2174.91 777 758 188.6
A 3 14 325231 1720.5 777 758 188.6
A 10 251 130465 687.76 777 758 188.6
B 4 236 370761 2250.71 762 732 164.4
B 2 249 273118 1656.8 762 732 164.4
B 5 185 95885 578.77 762 732 164.4
C 15 219 368072 1772.88 754 747 207.2
C 12 252 65311 311.61 754 747 207.2
C 4 5 23578 110.19 754 747 207.2
D 12 1 15813455 250399.28 215 204 63.2
D 6 239 63153 996.78 215 204 63.2
D 8 160 33872 533.13 215 204 63.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct