ASTROSAT CZTI

Data Quality Report

Orbit 58894

Creation date: 2026-08-16T21:10:25.584136
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_58894cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58894cztM0_level2_quad_clean.evt
Size (bytes)485,737,920100,085,760
Size463.2 MB 95.4 MB
Events in quadrant A3,546,756664,798
Events in quadrant B3,976,433695,173
Events in quadrant C4,003,828626,934
Events in quadrant D5,926,962570,996

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151321
B0163801
C0167611
D0223601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67801492.197640%
B67812703.981714%
C67812563.775254%
D67814486.606695%

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 6985 6781 15 15 0.21% 0.22%
B 6986 6782 83 83 1.19% 1.22%
C 6986 6781 173 173 2.48% 2.55%
D 6986 6782 200 200 2.86% 2.95%

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 14 238 403135 2117.79 774 755 190.0
A 0 24 58800 305.5 774 755 190.0
A 3 245 28700 147.08 774 755 190.0
B 4 171 152311 929.61 753 725 163.1
B 4 201 129585 790.24 753 725 163.1
B 8 234 115243 702.28 753 725 163.1
C 12 252 531368 2607.44 741 733 203.5
C 12 249 304587 1493.08 741 733 203.5
C 6 223 120145 586.77 741 733 203.5
D 12 110 2036256 9691.82 743 709 210.0
D 11 129 305293 1450.21 743 709 210.0
D 2 249 272959 1296.26 743 709 210.0

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