ASTROSAT CZTI

Data Quality Report

Orbit 37034

Creation date: 2024-06-27T21:34:34.806049
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/AS1T05_046T01_9000005266_37034cztM0_level2.evt modeM0/AS1T05_046T01_9000005266_37034cztM0_level2_quad_clean.evt
Size (bytes)1,086,684,480164,485,440
Size1.0 GB 156.9 MB
Events in quadrant A6,921,1621,028,796
Events in quadrant B7,231,9151,031,987
Events in quadrant C9,250,064992,888
Events in quadrant D8,560,271959,562

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291333
B0304813
C0363803
D0349673

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02840
B02840
C02840
D02840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14032310.220924%
B14032770.548746%
C140313072.188012%
D140312791.988454%

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 23767 14035 14 14 0.06% 0.10%
B 23767 14035 51 51 0.21% 0.36%
C 23767 14034 274 274 1.15% 1.95%
D 23767 14034 257 257 1.08% 1.83%

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 10 83 488555 1498.51 1626 1593 325.0
A 9 143 79407 239.45 1626 1593 325.0
A 13 6 35026 102.88 1626 1593 325.0
B 5 184 231368 751.63 1608 1565 305.7
B 5 172 201964 655.46 1608 1565 305.7
B 0 213 138129 446.67 1608 1565 305.7
C 0 10 1055620 2944.08 1554 1565 358.0
C 1 23 613056 1707.96 1554 1565 358.0
C 15 214 589646 1642.57 1554 1565 358.0
D 2 250 725964 1909.31 1563 1522 379.4
D 2 249 483013 1269.0 1563 1522 379.4
D 13 249 449259 1180.04 1563 1522 379.4

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