ASTROSAT CZTI

Data Quality Report

Orbit 58938

Creation date: 2026-08-19T20:18:19.243989
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_58938cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58938cztM0_level2_quad_clean.evt
Size (bytes)875,808,00086,834,880
Size835.2 MB 82.8 MB
Events in quadrant A6,593,550665,021
Events in quadrant B4,451,404716,302
Events in quadrant C5,511,962628,563
Events in quadrant D15,312,285124,794

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252731017
B0201011992
C0224731201
D0538653587

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01508
B01496
C015010
D015010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71135257.380852%
B70954065.722340%
C71085277.414181%
D7085585782.667608%

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 7559 7137 490 490 6.48% 6.87%
B 7559 7108 212 212 2.80% 2.98%
C 7560 7129 457 457 6.04% 6.41%
D 7559 7084 5486 5486 72.58% 77.44%

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 2822099 14549.19 793 774 193.9
A 14 238 306905 1578.68 793 774 193.9
A 0 24 86211 440.59 793 774 193.9
B 4 171 562349 3337.27 780 752 168.3
B 4 236 343874 2038.99 780 752 168.3
B 10 247 184297 1090.71 780 752 168.3
C 12 252 845622 4021.32 766 758 210.1
C 15 219 713942 3394.56 766 758 210.1
C 15 208 510629 2426.85 766 758 210.1
D 12 110 12067692 94169.3 446 426 128.1
D 5 38 867665 6767.67 446 426 128.1
D 11 129 299688 2335.35 446 426 128.1

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