ASTROSAT CZTI

Data Quality Report

Orbit 31496

Creation date: 2024-06-27T20:29:15.434733
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/AS1A10_048T04_9000004586_31496cztM0_level2.evt modeM0/AS1A10_048T04_9000004586_31496cztM0_level2_quad_clean.evt
Size (bytes)260,424,00041,618,880
Size248.4 MB 39.7 MB
Events in quadrant A1,487,521277,111
Events in quadrant B2,247,954278,961
Events in quadrant C1,654,555255,575
Events in quadrant D2,312,742255,360

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059471
B084351
C064361
D086461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2694291.076466%
B2694642.375650%
C26941344.974016%
D2694441.633259%

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 3939 2695 0 0 0.00% 0.00%
B 3939 2694 0 0 0.00% 0.00%
C 3939 2694 70 70 1.78% 2.60%
D 3939 2694 17 17 0.43% 0.63%

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 0 13 7650 94.02 384 380 77.3
A 13 254 4600 54.58 384 380 77.3
A 3 137 3707 43.03 384 380 77.3
B 6 159 713266 9802.53 378 367 72.7
B 4 80 27253 369.68 378 367 72.7
B 0 190 10223 135.52 378 367 72.7
C 0 10 200207 2421.53 353 355 82.5
C 14 238 58211 701.02 353 355 82.5
C 12 249 7076 81.44 353 355 82.5
D 8 195 882490 10229.27 363 356 86.2
D 2 250 37792 434.11 363 356 86.2
D 2 234 10641 119.27 363 356 86.2

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