ASTROSAT CZTI

Data Quality Report

Orbit 59228

Creation date: 2026-09-08T09:23:24.186572
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/AS1T05_271T01_9000006604_59228cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59228cztM0_level2_quad_clean.evt
Size (bytes)2,224,399,680388,445,760
Size2.1 GB 370.5 MB
Events in quadrant A14,384,1782,676,500
Events in quadrant B13,512,7202,878,783
Events in quadrant C23,751,7482,176,455
Events in quadrant D28,620,7722,186,841

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0618265
B0597005
C0895465
D01039225

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05440
B05440
C05440
D05440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A268056422.395076%
B268066792.533015%
C26806496818.533164%
D26806348412.997090%

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 31745 26810 380 380 1.20% 1.42%
B 31746 26807 245 245 0.77% 0.91%
C 31746 26809 4400 4400 13.86% 16.41%
D 31746 26809 2948 2948 9.29% 11.00%

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 1070723 1478.59 2958 2888 722.2
A 15 233 708498 977.03 2958 2888 722.2
A 14 238 510101 702.32 2958 2888 722.2
B 4 201 587145 935.79 2940 2817 624.4
B 10 247 576244 918.33 2940 2817 624.4
B 4 236 457253 727.77 2940 2817 624.4
C 15 189 9299197 13075.77 2605 2585 711.0
C 5 250 741276 1038.98 2605 2585 711.0
C 15 188 716378 1003.96 2605 2585 711.0
D 12 110 14145894 18049.65 2778 2660 783.6
D 11 129 2575213 3283.1 2778 2660 783.6
D 8 240 261141 329.87 2778 2660 783.6

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