ASTROSAT CZTI

Data Quality Report

Orbit 56447

Creation date: 2026-03-05T05:28:50.505369
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_083T05_9000006554_56447cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56447cztM0_level2_quad_clean.evt
Size (bytes)573,886,08088,067,520
Size547.3 MB 84.0 MB
Events in quadrant A4,164,355608,058
Events in quadrant B6,441,252542,339
Events in quadrant C3,250,830600,823
Events in quadrant D6,885,865464,930

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168462
B0236882
C0144222
D0249112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64582984.614432%
B6458136921.198513%
C6458510.789718%
D6458119718.535150%

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 7573 6459 304 304 4.01% 4.71%
B 7572 6457 1150 1150 15.19% 17.81%
C 7573 6459 39 39 0.51% 0.60%
D 7572 6457 1262 1262 16.67% 19.54%

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 12 3 613549 3635.26 681 665 168.6
A 4 95 271668 1607.43 681 665 168.6
A 3 14 191004 1128.98 681 665 168.6
B 5 172 2605316 20044.87 600 578 129.9
B 4 206 1109005 8529.95 600 578 129.9
B 5 236 157907 1210.73 600 578 129.9
C 1 16 336503 1820.07 670 663 184.5
C 6 223 111017 598.06 670 663 184.5
C 12 249 74408 399.66 670 663 184.5
D 5 113 2105345 12069.62 613 584 174.4
D 8 129 1108602 6353.86 613 584 174.4
D 12 3 719123 4120.42 613 584 174.4

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