ASTROSAT CZTI

Data Quality Report

Orbit 19704

Creation date: 2024-06-27T18:05:48.142904
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/AS1A05_013T01_9000002944_19704cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19704cztM0_level2_quad_clean.evt
Size (bytes)657,092,16099,912,960
Size626.7 MB 95.3 MB
Events in quadrant A4,432,182616,540
Events in quadrant B4,643,549622,806
Events in quadrant C4,525,488595,623
Events in quadrant D5,701,429579,339

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189621
B0193191
C0188471
D0228661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87964394.990905%
B87974905.570081%
C87974885.547346%
D87976577.468455%

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 9271 8796 17 17 0.18% 0.19%
B 9272 8797 40 40 0.43% 0.45%
C 9272 8797 0 0 0.00% 0.00%
D 9272 8797 248 248 2.67% 2.82%

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 5 16 150332 657.07 1112 1088 227.1
A 0 226 9644 37.67 1112 1088 227.1
A 3 137 9356 36.4 1112 1088 227.1
B 4 216 102897 478.97 1104 1074 212.6
B 3 64 82530 383.16 1104 1074 212.6
B 0 198 75358 349.43 1104 1074 212.6
C 3 233 183910 728.81 1067 1074 250.9
C 14 238 164325 650.74 1067 1074 250.9
C 9 221 12562 45.79 1067 1074 250.9
D 1 52 1235672 4735.16 1069 1035 260.7
D 2 16 339216 1297.01 1069 1035 260.7
D 2 234 37142 138.48 1069 1035 260.7

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