ASTROSAT CZTI

Data Quality Report

Orbit 53038

Creation date: 2025-07-18T20:07:22.124906
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_011T07_9000006488_53038cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53038cztM0_level2_quad_clean.evt
Size (bytes)1,149,779,52061,453,440
Size1.1 GB 58.6 MB
Events in quadrant A15,323,28267,967
Events in quadrant B3,905,993688,278
Events in quadrant C9,152,007442,477
Events in quadrant D13,652,351185,036

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01434
B01440
C01448
D01422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0534713478
B017200550
C0332731277
D0480522842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6707602189.771880%
B69572193.147909%
C6898202729.385329%
D6771490572.441294%

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 7378 6760 5817 5817 78.84% 86.05%
B 7380 7115 136 136 1.84% 1.91%
C 7378 7057 2003 2003 27.15% 28.38%
D 7378 6833 4232 4232 57.36% 61.93%

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 9 191 12983093 234216.88 217 212 55.4
A 7 206 1009619 18210.15 217 212 55.4
A 0 8 342913 6182.48 217 212 55.4
B 10 44 271741 1783.52 714 691 152.0
B 10 247 147965 969.07 714 691 152.0
B 4 81 108654 710.4 714 691 152.0
C 1 241 3516682 21459.86 600 595 163.8
C 7 80 848803 5176.9 600 595 163.8
C 4 5 789811 4816.85 600 595 163.8
D 8 176 8369900 73843.44 390 372 113.3
D 12 17 2658031 23448.24 390 372 113.3
D 15 78 393271 3466.51 390 372 113.3

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