ASTROSAT CZTI

Data Quality Report

Orbit 57454

Creation date: 2026-05-11T23:54:03.939933
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_113T09_9000006574_57454cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57454cztM0_level2_quad_clean.evt
Size (bytes)472,078,08088,217,280
Size450.2 MB 84.1 MB
Events in quadrant A3,048,013601,020
Events in quadrant B5,095,045566,535
Events in quadrant C4,600,681552,086
Events in quadrant D4,244,778515,249

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134891
B0195181
C0180351
D0169891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6254350.559642%
B625583713.381295%
C62553014.812150%
D62553936.282974%

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 7029 6255 3 3 0.04% 0.05%
B 7030 6256 497 497 7.07% 7.94%
C 7030 6256 216 216 3.07% 3.45%
D 7030 6256 280 280 3.98% 4.48%

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 3 14 317881 1899.79 673 654 167.0
A 4 95 95499 568.0 673 654 167.0
A 0 12 15538 89.14 673 654 167.0
B 4 206 1267888 9413.94 627 602 134.6
B 5 185 1051600 7807.26 627 602 134.6
B 0 63 106144 784.01 627 602 134.6
C 15 224 1715790 9834.89 636 629 174.4
C 3 248 112018 638.72 636 629 174.4
C 1 16 98849 563.2 636 629 174.4
D 8 240 875387 4895.14 633 602 178.7
D 15 142 304826 1702.38 633 602 178.7
D 2 249 172732 963.21 633 602 178.7

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