ASTROSAT CZTI

Data Quality Report

Orbit 59270

Creation date: 2026-09-11T04:08:27.905647
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_59270cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59270cztM0_level2_quad_clean.evt
Size (bytes)526,075,200112,821,120
Size501.7 MB 107.6 MB
Events in quadrant A3,464,376744,232
Events in quadrant B3,839,365800,909
Events in quadrant C4,211,528727,941
Events in quadrant D7,381,257626,302

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157142
B0167112
C0173302
D0272162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7431891.197685%
B74312373.189342%
C74311461.964742%
D743181710.994483%

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 9781 7433 23 23 0.24% 0.31%
B 9781 7433 104 104 1.06% 1.40%
C 9781 7433 65 65 0.66% 0.87%
D 9781 7433 613 613 6.27% 8.25%

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 0 24 101652 488.25 835 812 206.5
A 3 14 75363 360.97 835 812 206.5
A 15 233 24337 113.91 835 812 206.5
B 4 236 346572 1946.43 828 797 177.6
B 10 247 90029 502.3 828 797 177.6
B 5 185 48646 269.35 828 797 177.6
C 3 233 376523 1640.21 829 823 229.1
C 15 198 203323 884.06 829 823 229.1
C 14 96 128654 558.08 829 823 229.1
D 12 110 2761501 12210.89 796 762 226.1
D 11 129 1299630 5744.96 796 762 226.1
D 3 12 64428 281.6 796 762 226.1

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