ASTROSAT CZTI

Data Quality Report

Orbit 53896

Creation date: 2025-09-14T14:20:35.213594
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_057T04_9000006508_53896cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53896cztM0_level2_quad_clean.evt
Size (bytes)949,680,00095,201,280
Size905.7 MB 90.8 MB
Events in quadrant A4,131,665757,210
Events in quadrant B4,954,117794,371
Events in quadrant C6,709,376690,454
Events in quadrant D18,720,97670,184

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182902
B0202592
C0257352
D0612636

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82092973.617980%
B82104695.712546%
C82107889.598051%
D8209757092.215861%

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 8319 8211 80 80 0.96% 0.97%
B 8320 8212 100 100 1.20% 1.22%
C 8320 8212 522 522 6.27% 6.36%
D 8318 8208 6106 6106 73.41% 74.39%

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 8 463985 2053.49 915 890 225.5
A 15 174 40542 175.83 915 890 225.5
A 4 249 40306 174.78 915 890 225.5
B 0 213 579202 2987.29 897 865 193.6
B 7 0 458006 2361.27 897 865 193.6
B 4 171 73984 377.68 897 865 193.6
C 15 224 2947652 12400.37 865 857 237.6
C 5 10 129777 542.5 865 857 237.6
C 12 254 65130 270.46 865 857 237.6
D 8 176 16670849 225354.28 250 238 74.0
D 6 239 597910 8079.36 250 238 74.0
D 3 224 198403 2678.81 250 238 74.0

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