ASTROSAT CZTI

Data Quality Report

Orbit 54254

Creation date: 2025-10-09T16:00:10.358016
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/AS1C09_004T08_9000006514_54254cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54254cztM0_level2_quad_clean.evt
Size (bytes)540,901,44091,874,880
Size515.8 MB 87.6 MB
Events in quadrant A5,370,170578,436
Events in quadrant B3,327,013688,581
Events in quadrant C4,833,345557,622
Events in quadrant D5,996,632512,113

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202561
B0142372
C0188241
D0220741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A638179112.396176%
B63801572.460815%
C63805438.510972%
D638171411.189469%

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 7521 6382 619 619 8.23% 9.70%
B 7520 6381 22 22 0.29% 0.34%
C 7520 6381 451 451 6.00% 7.07%
D 7520 6381 768 768 10.21% 12.04%

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 7 29 1861629 11328.39 658 639 164.3
A 13 248 428550 2604.82 658 639 164.3
A 15 174 274898 1669.5 658 639 164.3
B 0 213 216105 1466.47 682 657 146.9
B 7 0 93330 630.79 682 657 146.9
B 5 236 87289 589.67 682 657 146.9
C 1 29 1864138 10598.83 638 631 175.8
C 14 254 133789 757.35 638 631 175.8
C 12 249 80433 453.88 638 631 175.8
D 8 176 2975865 16452.18 637 608 180.8
D 12 3 143847 792.06 637 608 180.8
D 10 181 107946 593.54 637 608 180.8

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