ASTROSAT CZTI

Data Quality Report

Orbit 58922

Creation date: 2026-08-18T18:11:16.659131
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_004T07_9000006598_58922cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58922cztM0_level2_quad_clean.evt
Size (bytes)450,100,800103,970,880
Size429.2 MB 99.2 MB
Events in quadrant A3,504,568691,992
Events in quadrant B4,013,197722,410
Events in quadrant C4,233,990641,242
Events in quadrant D4,370,349609,877

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150762
B0166332
C0174502
D0175242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69301952.813853%
B69303264.704185%
C69303535.093795%
D69303414.920635%

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 7700 6930 28 28 0.36% 0.40%
B 7700 6930 90 90 1.17% 1.30%
C 7700 6930 194 194 2.52% 2.80%
D 7700 6931 160 160 2.08% 2.31%

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 13 248 137994 701.22 799 779 195.7
A 10 251 103830 526.63 799 779 195.7
A 14 238 62830 317.1 799 779 195.7
B 4 171 418871 2510.39 777 749 166.6
B 10 247 173439 1036.82 777 749 166.6
B 5 172 90233 537.26 777 749 166.6
C 12 252 562430 2693.43 760 752 208.5
C 12 249 334413 1600.01 760 752 208.5
C 6 223 140126 668.34 760 752 208.5
D 12 110 725757 3302.16 769 735 219.6
D 7 222 183971 834.56 769 735 219.6
D 11 129 115000 520.43 769 735 219.6

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