ASTROSAT CZTI

Data Quality Report

Orbit 20210204_A10_048T03_9000004154_level2

Creation date: 2025-12-20T06:42:21.708234
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/AS1A10_048T03_9000004154cztM0_level2.fits modeM0/AS1A10_048T03_9000004154cztM0_level2_quad_clean.evt
Size (bytes)1,275,050,8801,123,056,000
Size1.2 GB 1.0 GB
Events in quadrant A7,937,9326,634,930
Events in quadrant B7,655,0666,713,135
Events in quadrant C7,760,7706,370,871
Events in quadrant D6,422,8525,459,120

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02759060
B02849770
C02727970
D04527700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026220
B026220
C026220
D026220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12891818521.436572%
B12891827872.161839%
C12891824931.933787%
D1289181347610.453156%

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 151304 128914 0 0 0.00% 0.00%
B 151304 128909 0 0 0.00% 0.00%
C 151304 128910 0 0 0.00% 0.00%
D 151304 128718 0 0 0.00% 0.00%

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 29 7555 11.15 2071 1945 503.2
A 7 110 6445 8.94 2071 1945 503.2
A 0 30 6031 8.12 2071 1945 503.2
B 2 9 6148 10.72 2023 1928 393.8
B 2 8 5102 8.06 2023 1928 393.8
B 5 225 5030 7.88 2023 1928 393.8
C 12 241 5433 6.73 2052 1918 522.2
C 3 126 5173 6.23 2052 1918 522.2
C 9 209 5137 6.16 2052 1918 522.2
D 15 46 4777 6.4 1831 1667 485.8
D 3 14 4490 5.81 1831 1667 485.8
D 7 3 4483 5.8 1831 1667 485.8

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