ASTROSAT CZTI

Data Quality Report

Orbit 53408

Creation date: 2025-08-12T18:27:44.477756
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_011T09_9000006494_53408cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53408cztM0_level2_quad_clean.evt
Size (bytes)853,266,24069,595,200
Size813.7 MB 66.4 MB
Events in quadrant A4,925,423514,731
Events in quadrant B6,594,785566,625
Events in quadrant C14,328,184100,233
Events in quadrant D5,271,444504,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189054
B0237981
C04669317
D0198275

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A601281213.506321%
B601488314.682408%
C6013509084.649925%
D60143796.301962%

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 6964 6014 699 699 10.04% 11.62%
B 6964 6014 571 571 8.20% 9.49%
C 6965 6013 4995 4995 71.72% 83.07%
D 6964 6015 390 390 5.60% 6.48%

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 15 174 1239824 8370.58 598 583 148.0
A 3 63 538376 3632.58 598 583 148.0
A 0 8 413536 2789.33 598 583 148.0
B 4 206 1395654 10894.36 601 580 128.1
B 4 171 975164 7610.68 601 580 128.1
B 2 249 868906 6780.9 601 580 128.1
C 1 241 8172592 78092.61 382 379 104.6
C 15 224 1968048 18802.79 382 379 104.6
C 1 240 642268 6133.81 382 379 104.6
D 10 172 1219007 7104.96 607 581 171.5
D 13 46 418963 2439.69 607 581 171.5
D 2 249 267596 1557.03 607 581 171.5

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