ASTROSAT CZTI

Data Quality Report

Orbit 51932

Creation date: 2025-05-05T08:34:06.036237
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_011T05_9000006466_51932cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51932cztM0_level2_quad_clean.evt
Size (bytes)1,110,444,48073,627,200
Size1.0 GB 70.2 MB
Events in quadrant A6,689,162587,897
Events in quadrant B12,627,266362,561
Events in quadrant C12,012,351353,672
Events in quadrant D9,246,932445,189

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246652
B0423162
C0404582
D0322582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A687577611.287273%
B6875384655.941818%
C6874343950.029095%
D6874197228.687809%

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 7905 6877 674 674 8.53% 9.80%
B 7905 6876 3474 3474 43.95% 50.52%
C 7903 6873 3173 3173 40.15% 46.17%
D 7904 6875 2010 2010 25.43% 29.24%

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 7 64 1509119 8929.55 678 662 168.9
A 12 3 936354 5538.98 678 662 168.9
A 4 175 229498 1354.63 678 662 168.9
B 12 32 9066741 82420.88 521 504 110.0
B 4 171 332547 3018.59 521 504 110.0
B 4 206 233278 2116.14 521 504 110.0
C 15 224 5599362 38472.21 518 513 145.5
C 15 218 1395147 9583.16 518 513 145.5
C 9 38 1137927 7815.68 518 513 145.5
D 6 42 4282177 24785.25 605 578 172.7
D 12 17 723069 4182.34 605 578 172.7
D 3 12 421781 2438.25 605 578 172.7

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