ASTROSAT CZTI

Data Quality Report

Orbit 59273

Creation date: 2026-09-12T10:02:20.198442
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_59273cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59273cztM0_level2_quad_clean.evt
Size (bytes)868,800,960111,432,960
Size828.6 MB 106.3 MB
Events in quadrant A8,052,677761,860
Events in quadrant B3,984,653830,153
Events in quadrant C6,007,489699,537
Events in quadrant D13,487,623517,399

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298031
B0179381
C0235733
D0457051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81285256.459154%
B81282322.854331%
C812881810.063976%
D8128253531.188484%

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 8288 8129 181 181 2.18% 2.23%
B 8288 8129 85 85 1.03% 1.05%
C 8288 8129 515 515 6.21% 6.34%
D 8288 8129 2546 2546 30.72% 31.32%

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 15 233 4494127 20556.76 890 868 218.6
A 3 14 47960 215.45 890 868 218.6
A 7 64 25856 114.32 890 868 218.6
B 4 236 398718 2051.41 890 852 193.9
B 12 111 24389 121.36 890 852 193.9
B 14 111 22644 112.36 890 852 193.9
C 15 198 2040391 8617.29 860 853 236.7
C 14 96 268077 1129.05 860 853 236.7
C 12 252 111454 467.3 860 853 236.7
D 12 110 9890612 43287.91 804 765 228.5
D 11 129 182076 793.6 804 765 228.5
D 3 12 117710 511.87 804 765 228.5

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