ASTROSAT CZTI

Data Quality Report

Orbit 22639

Creation date: 2024-06-27T18:43:55.521429
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/AS1A08_007T01_9000003362_22639cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22639cztM0_level2_quad_clean.evt
Size (bytes)181,238,40014,820,480
Size172.8 MB 14.1 MB
Events in quadrant A1,123,05976,568
Events in quadrant B1,253,90177,518
Events in quadrant C1,126,77575,147
Events in quadrant D1,849,54975,830

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045171
B050791
C045121
D067351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1961854.334523%
B1961984.997450%
C19611125.711372%
D196127013.768485%

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 3281 1962 0 0 0.00% 0.00%
B 3281 1962 0 0 0.00% 0.00%
C 3281 1962 0 0 0.00% 0.00%
D 3281 1962 180 180 5.49% 9.17%

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 11 47 4754 76.63 289 283 58.3
A 13 254 3251 50.87 289 283 58.3
A 0 226 2612 39.92 289 283 58.3
B 0 190 65057 1183.11 284 278 54.8
B 0 229 27585 498.73 284 278 54.8
B 0 228 23407 422.42 284 278 54.8
C 14 238 44423 687.31 274 275 64.2
C 0 10 12834 195.52 274 275 64.2
C 13 61 1891 25.16 274 275 64.2
D 7 238 650110 9646.81 275 267 67.4
D 12 233 85334 1262.81 275 267 67.4
D 1 52 62526 924.22 275 267 67.4

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