ASTROSAT CZTI

Data Quality Report

Orbit 54478

Creation date: 2025-10-23T18:44:42.385501
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_126T19_9000006518_54478cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54478cztM0_level2_quad_clean.evt
Size (bytes)722,401,92093,084,480
Size688.9 MB 88.8 MB
Events in quadrant A3,864,331680,101
Events in quadrant B4,134,060717,757
Events in quadrant C4,299,588637,188
Events in quadrant D13,867,240267,411

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162470
B0174750
C0182050
D0463200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7413460.620531%
B74131882.536085%
C74141922.589695%
D7413439459.274248%

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 7413 7413 41 41 0.55% 0.55%
B 7413 7413 138 138 1.86% 1.86%
C 7414 7414 181 181 2.44% 2.44%
D 7412 7412 4371 4371 58.97% 58.97%

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 326741 1703.41 773 750 191.4
A 11 3 134210 697.37 773 750 191.4
A 4 249 132234 687.05 773 750 191.4
B 5 185 504480 3086.33 758 730 163.2
B 0 213 326615 1996.6 758 730 163.2
B 5 172 198919 1214.24 758 730 163.2
C 4 5 626180 3073.32 738 733 203.5
C 12 2 442531 2170.91 738 733 203.5
C 13 3 82645 402.5 738 733 203.5
D 8 176 9028395 64177.3 490 467 140.7
D 10 181 1922006 13659.74 490 467 140.7
D 3 12 283876 2014.68 490 467 140.7

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