ASTROSAT CZTI

Data Quality Report

Orbit 57408

Creation date: 2026-05-08T21:29:17.837706
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_102T01_9000006572_57408cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57408cztM0_level2_quad_clean.evt
Size (bytes)509,065,92092,779,200
Size485.5 MB 88.5 MB
Events in quadrant A4,726,662628,350
Events in quadrant B3,451,924668,066
Events in quadrant C6,554,691519,311
Events in quadrant D3,623,310555,779

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184291
B0148321
C0238741
D0152972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62791181.879280%
B62801001.592357%
C6280107517.117834%
D62792033.232999%

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 7429 6280 1 1 0.01% 0.02%
B 7430 6281 20 20 0.27% 0.32%
C 7430 6281 837 837 11.27% 13.33%
D 7429 6280 137 137 1.84% 2.18%

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 12 1974479 11540.65 690 672 171.0
A 8 227 24417 138.83 690 672 171.0
A 4 3 20523 116.07 690 672 171.0
B 0 216 447044 3084.1 677 653 144.7
B 0 63 93448 641.12 677 653 144.7
B 5 185 73171 501.02 677 653 144.7
C 15 224 3927336 23465.54 609 603 167.3
C 14 254 93381 554.43 609 603 167.3
C 6 223 45438 267.93 609 603 167.3
D 8 240 297122 1597.09 659 630 185.6
D 15 142 164621 883.36 659 630 185.6
D 2 249 159537 855.97 659 630 185.6

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