ASTROSAT CZTI

Data Quality Report

Orbit 50208

Creation date: 2025-01-09T06:11:46.343090
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_003T01_9000006442_50208cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50208cztM0_level2_quad_clean.evt
Size (bytes)1,706,137,92049,605,120
Size1.6 GB 47.3 MB
Events in quadrant A16,131,303222,313
Events in quadrant B8,891,540658,259
Events in quadrant C17,936,87569,482
Events in quadrant D19,605,02614,525

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0532630
B0317860
C0585110
D0634640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7711552071.586046%
B7712138417.946058%
C7711705591.492673%
D7711757998.288160%

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 7710 7710 5125 5125 66.47% 66.47%
B 7712 7712 1011 1011 13.11% 13.11%
C 7710 7710 6191 6191 80.30% 80.30%
D 7710 7710 7334 7334 95.12% 95.12%

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 0 98 10002118 70693.08 537 521 141.5
A 12 250 913832 6455.45 537 521 141.5
A 8 249 691958 4887.2 537 521 141.5
B 4 206 2731910 17410.6 745 719 156.9
B 10 128 1641691 10460.75 745 719 156.9
B 3 249 607914 3870.7 745 719 156.9
C 4 111 11451722 135616.79 289 288 84.4
C 15 197 2398092 28396.66 289 288 84.4
C 13 250 984972 11661.39 289 288 84.4
D 7 61 7822968 80531.69 302 289 97.1
D 15 168 3012756 31012.27 302 289 97.1
D 15 108 2532578 26069.01 302 289 97.1

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