ASTROSAT CZTI

Data Quality Report

Orbit 41823

Creation date: 2024-06-27T22:33:13.397139
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/AS1A12_093T02_9000005704_41823cztM0_level2.fits modeM0/AS1A12_093T02_9000005704_41823cztM0_level2_quad_clean.evt
Size (bytes)216,659,52061,715,520
Size206.6 MB 58.9 MB
Events in quadrant A2,067,568430,532
Events in quadrant B1,646,513434,055
Events in quadrant C2,166,982388,041
Events in quadrant D1,872,724375,189

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082411
B070361
C083291
D078381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A339980.235363%
B339990.264784%
C33991504.413063%
D3399661.941748%

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 3399 3399 4 4 0.12% 0.12%
B 3399 3399 3 3 0.09% 0.09%
C 3399 3399 147 147 4.32% 4.32%
D 3399 3399 57 57 1.68% 1.68%

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 348595 4193.28 403 395 83.0
A 12 189 79141 948.32 403 395 83.0
A 14 24 74656 894.31 403 395 83.0
B 0 186 24151 310.34 395 385 76.6
B 3 112 19902 254.85 395 385 76.6
B 0 183 13139 166.54 395 385 76.6
C 0 10 494429 5661.87 373 375 87.3
C 15 214 136656 1561.78 373 375 87.3
C 14 254 76528 872.72 373 375 87.3
D 13 249 255493 2701.9 389 379 94.4
D 12 233 35091 367.63 389 379 94.4
D 5 222 22469 233.95 389 379 94.4

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