ASTROSAT CZTI

Data Quality Report

Orbit 59339

Creation date: 2026-09-15T19:13:17.774266
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_033T01_9000006608_59339cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59339cztM0_level2_quad_clean.evt
Size (bytes)428,653,440102,424,320
Size408.8 MB 97.7 MB
Events in quadrant A3,157,567677,094
Events in quadrant B3,954,945707,224
Events in quadrant C4,488,514640,136
Events in quadrant D3,740,741606,080

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141032
B0162742
C0176602
D0153482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67551642.427831%
B67564126.098283%
C67551972.916358%
D67551412.087343%

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 8740 6757 11 11 0.13% 0.16%
B 8741 6758 158 158 1.81% 2.34%
C 8740 6757 14 14 0.16% 0.21%
D 8740 6757 13 13 0.15% 0.19%

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 10 251 42562 217.62 789 770 192.0
A 0 24 23352 117.59 789 770 192.0
A 3 137 9881 47.44 789 770 192.0
B 4 236 604777 3700.07 763 736 163.3
B 4 171 104468 635.41 763 736 163.3
B 5 185 49981 301.65 763 736 163.3
C 1 16 1121610 5428.5 759 751 206.5
C 3 233 181944 877.55 759 751 206.5
C 12 252 65907 315.56 759 751 206.5
D 12 110 289269 1331.04 766 731 216.8
D 11 129 213337 980.76 766 731 216.8
D 3 12 69738 318.33 766 731 216.8

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