ASTROSAT CZTI

Data Quality Report

Orbit 04398

Creation date: 2024-06-27T14:41:26.166344
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/AS1G05_230T02_9000000548_04398cztM0_level2.evt modeM0/AS1G05_230T02_9000000548_04398cztM0_level2_quad_clean.evt
Size (bytes)1,145,082,240215,213,760
Size1.1 GB 205.2 MB
Events in quadrant A7,572,6621,351,034
Events in quadrant B7,835,6321,364,745
Events in quadrant C9,125,9691,332,442
Events in quadrant D8,996,1951,299,683

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03460
B03460
C03460
D03460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0346265
B0350804
C0390784
D0390394

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16968910.536304%
B16968860.506836%
C169684492.646157%
D169684002.357379%

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 20193 16971 26 26 0.13% 0.15%
B 20193 16971 11 11 0.05% 0.06%
C 20193 16971 317 317 1.57% 1.87%
D 20193 16971 269 269 1.33% 1.59%

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 50 79489 199.1 1920 1875 389.8
A 8 15 39647 96.9 1920 1875 389.8
A 15 234 32080 77.48 1920 1875 389.8
B 14 167 144423 389.96 1941 1892 365.5
B 10 16 98379 263.99 1941 1892 365.5
B 12 111 31025 79.71 1941 1892 365.5
C 9 247 1131938 2635.12 1871 1880 428.8
C 9 16 506091 1175.74 1871 1880 428.8
C 14 48 112345 257.59 1871 1880 428.8
D 9 35 555403 1223.33 1877 1821 452.5
D 2 136 437341 962.43 1877 1821 452.5
D 2 37 368031 809.27 1877 1821 452.5

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