ASTROSAT CZTI

Data Quality Report

Orbit 52234

Creation date: 2025-06-23T13:22:41.359364
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_011T08_9000006472_52234cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52234cztM0_level2_quad_clean.evt
Size (bytes)1,566,878,400207,120,960
Size1.5 GB 197.5 MB
Events in quadrant A10,733,0511,405,886
Events in quadrant B11,903,7141,512,340
Events in quadrant C21,254,342991,713
Events in quadrant D12,887,7301,267,182

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0431113
B04629711
C0740903
D0493153

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A158397914.994002%
B158389485.985604%
C15839494331.207778%
D158398815.562220%

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 18764 15840 682 682 3.63% 4.31%
B 18764 15839 630 630 3.36% 3.98%
C 18764 15841 4600 4600 24.52% 29.04%
D 18764 15841 863 863 4.60% 5.45%

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 4 249 969203 2395.12 1633 1595 404.0
A 12 3 921304 2276.55 1633 1595 404.0
A 3 22 779842 1926.39 1633 1595 404.0
B 5 32 2570420 7601.69 1597 1546 337.9
B 10 254 750775 2217.08 1597 1546 337.9
B 0 213 469893 1385.91 1597 1546 337.9
C 15 224 11479787 30938.73 1347 1336 371.0
C 9 38 1404259 3781.4 1347 1336 371.0
C 15 231 1030584 2774.21 1347 1336 371.0
D 12 2 1523472 3427.76 1561 1493 444.0
D 12 17 1407304 3166.13 1561 1493 444.0
D 8 176 1270217 2857.39 1561 1493 444.0

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