ASTROSAT CZTI

Data Quality Report

Orbit 15148

Creation date: 2024-06-27T17:04:21.517332
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/AS1A04_218T03_9000002232_15148cztM0_level2.evt modeM0/AS1A04_218T03_9000002232_15148cztM0_level2_quad_clean.evt
Size (bytes)287,256,96026,432,640
Size273.9 MB 25.2 MB
Events in quadrant A2,146,860142,277
Events in quadrant B2,884,780134,160
Events in quadrant C1,656,653141,794
Events in quadrant D1,778,070139,331

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086681
B0107541
C070631
D075381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3413842.461178%
B341361317.960738%
C3413521.523586%
D3413832.431878%

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 3779 3414 0 0 0.00% 0.00%
B 3779 3414 510 510 13.50% 14.94%
C 3779 3414 0 0 0.00% 0.00%
D 3779 3414 28 28 0.74% 0.82%

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 15 239 514161 5931.26 412 401 86.6
A 12 189 37741 431.08 412 401 86.6
A 13 248 9246 102.11 412 401 86.6
B 3 64 1337383 18201.64 370 361 73.5
B 4 48 28313 380.53 370 361 73.5
B 4 80 22124 296.27 370 361 73.5
C 3 233 103173 1083.57 398 399 94.8
C 13 61 2975 27.16 398 399 94.8
C 7 247 1101 7.4 398 399 94.8
D 2 33 100975 989.94 402 389 101.6
D 2 16 68986 675.12 402 389 101.6
D 10 70 38818 378.21 402 389 101.6

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