ASTROSAT CZTI

Data Quality Report

Orbit 58703

Creation date: 2026-08-04T07:21:50.927064
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_004T06_9000006594_58703cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58703cztM0_level2_quad_clean.evt
Size (bytes)16,044,4802,574,720
Size15.3 MB 2.5 MB
Events in quadrant A118,46517,535
Events in quadrant B122,96417,379
Events in quadrant C140,63617,109
Events in quadrant D190,5022,074

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022361713
B023471815
C024071819
D051384480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02218
B02216
C02115
D01916

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24910.401606%
B25100.000000%
C26400.000000%
D1403122.142857%

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 1169 345 1 1 0.09% 0.29%
B 1137 363 0 0 0.00% 0.00%
C 1309 383 0 0 0.00% 0.00%
D 653 223 12 12 1.84% 5.38%

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 14556 1708.37 26 25 8.5
A 13 254 448 49.73 26 25 8.5
A 3 137 306 33.04 26 25 8.5
B 8 234 7959 1062.83 26 25 7.5
B 6 255 4250 565.98 26 25 7.5
B 0 157 1951 258.01 26 25 7.5
C 13 3 13823 1456.54 28 27 9.5
C 12 252 8892 935.94 28 27 9.5
C 14 254 3577 374.8 28 27 9.5
D 11 129 87964 16293.95 13 13 5.4
D 8 240 29664 5493.19 13 13 5.4
D 2 249 7438 1375.57 13 13 5.4

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