ASTROSAT CZTI

Data Quality Report

Orbit 56625

Creation date: 2026-03-17T05:24:21.492090
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_083T06_9000006558_56625cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56625cztM0_level2_quad_clean.evt
Size (bytes)374,293,44096,108,480
Size357.0 MB 91.7 MB
Events in quadrant A3,224,676629,136
Events in quadrant B3,491,109677,095
Events in quadrant C3,102,520594,657
Events in quadrant D3,525,695551,562

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145302
B0150802
C0143652
D0153152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6562761.158183%
B65621281.950625%
C6562590.899116%
D6562941.432490%

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 7562 6563 44 44 0.58% 0.67%
B 7562 6563 58 58 0.77% 0.88%
C 7562 6563 33 33 0.44% 0.50%
D 7562 6563 78 78 1.03% 1.19%

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 231313 1347.84 691 673 171.1
A 4 249 157393 915.86 691 673 171.1
A 4 95 65036 376.13 691 673 171.1
B 0 231 245165 1672.97 688 663 146.1
B 5 185 124667 848.48 688 663 146.1
B 10 247 104821 712.68 688 663 146.1
C 1 16 278451 1516.85 668 661 183.1
C 6 223 126241 685.72 668 661 183.1
C 12 252 40844 219.41 668 661 183.1
D 2 249 314738 1664.71 658 628 188.7
D 6 239 111804 589.21 658 628 188.7
D 3 12 99205 522.44 658 628 188.7

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