ASTROSAT CZTI

Data Quality Report

Orbit 25318

Creation date: 2024-06-27T19:16:17.775295
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/AS1A07_059T07_9000003704_25318cztM0_level2.evt modeM0/AS1A07_059T07_9000003704_25318cztM0_level2_quad_clean.evt
Size (bytes)197,930,88016,332,480
Size188.8 MB 15.6 MB
Events in quadrant A1,289,70385,230
Events in quadrant B1,295,83485,158
Events in quadrant C1,315,68279,287
Events in quadrant D1,935,84179,031

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052100
B052550
C053160
D074820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A228750.218627%
B2287100.437254%
C2287291.268037%
D2287331.442938%

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 2287 2287 0 0 0.00% 0.00%
B 2287 2287 0 0 0.00% 0.00%
C 2287 2287 0 0 0.00% 0.00%
D 2287 2287 21 21 0.92% 0.92%

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 13 254 3666 50.38 334 329 66.2
A 3 137 2908 38.93 334 329 66.2
A 0 226 2836 37.85 334 329 66.2
B 3 112 8643 133.1 329 324 62.5
B 12 111 7121 108.75 329 324 62.5
B 11 111 6535 99.37 329 324 62.5
C 14 238 52339 703.63 316 321 73.9
C 9 54 24610 328.55 316 321 73.9
C 3 233 4401 55.19 316 321 73.9
D 8 195 571506 7203.42 324 315 79.3
D 1 52 95004 1194.15 324 315 79.3
D 7 238 23604 293.7 324 315 79.3

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