ASTROSAT CZTI

Data Quality Report

Orbit 58217

Creation date: 2026-07-02T09:08:23.688166
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_042T02_9000006586_58217cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58217cztM0_level2_quad_clean.evt
Size (bytes)465,448,320110,053,440
Size443.9 MB 105.0 MB
Events in quadrant A3,575,664724,513
Events in quadrant B4,227,159767,940
Events in quadrant C3,810,914680,008
Events in quadrant D5,023,089629,717

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163592
B0176513
C0170122
D0203152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7622710.931514%
B76211572.060097%
C76211361.784543%
D76212983.910248%

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 9232 7624 31 31 0.34% 0.41%
B 9231 7621 53 53 0.57% 0.70%
C 9231 7623 112 112 1.21% 1.47%
D 9231 7622 270 270 2.92% 3.54%

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 10 251 281964 1374.35 826 804 204.6
A 13 248 24150 114.12 826 804 204.6
A 3 245 20485 96.2 826 804 204.6
B 10 128 550255 3148.48 814 783 174.5
B 4 236 117230 667.24 814 783 174.5
B 0 153 64052 362.53 814 783 174.5
C 6 223 352299 1590.57 797 787 221.0
C 12 252 247461 1116.18 797 787 221.0
C 14 254 56097 250.27 797 787 221.0
D 3 224 513350 2322.1 782 748 220.7
D 8 240 349762 1581.04 782 748 220.7
D 7 222 320241 1447.31 782 748 220.7

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