ASTROSAT CZTI

Data Quality Report

Orbit 11544

Creation date: 2024-06-27T16:14:31.328154
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/AS1G08_009T01_9000001692_11544cztM0_level2.evt modeM0/AS1G08_009T01_9000001692_11544cztM0_level2_quad_clean.evt
Size (bytes)1,241,124,480135,587,520
Size1.2 GB 129.3 MB
Events in quadrant A10,630,097794,121
Events in quadrant B9,299,436789,982
Events in quadrant C6,756,688779,754
Events in quadrant D9,896,649714,420

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0443942712
B0388561582
C0317811446
D0414271530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032016
B031915
C031915
D032020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A148396404.312959%
B148986584.416700%
C14918760.509452%
D148837725.187126%

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 17209 14994 261 261 1.52% 1.74%
B 17334 15050 313 313 1.81% 2.08%
C 17350 15035 0 0 0.00% 0.00%
D 17377 15027 496 496 2.85% 3.30%

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 8 5 3020644 8353.78 1768 1734 361.4
A 1 162 268359 737.79 1768 1734 361.4
A 1 178 164475 450.33 1768 1734 361.4
B 4 239 2050472 6033.22 1773 1729 339.6
B 15 204 152450 443.85 1773 1729 339.6
B 0 214 87740 253.29 1773 1729 339.6
C 13 61 12710 27.28 1733 1743 402.0
C 3 202 4381 6.56 1733 1743 402.0
C -1 -1 -1 -1.0 1733 1743 402.0
D 1 52 1900852 4672.66 1695 1652 406.4
D 13 137 925575 2273.15 1695 1652 406.4
D 2 120 473769 1161.56 1695 1652 406.4

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