ASTROSAT CZTI

Data Quality Report

Orbit 29838

Creation date: 2024-06-27T20:08:13.287551
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/AS1T03_291T01_9000004278_29838cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29838cztM0_level2_quad_clean.evt
Size (bytes)747,362,880105,707,520
Size712.7 MB 100.8 MB
Events in quadrant A3,556,448718,796
Events in quadrant B5,843,178718,248
Events in quadrant C3,711,945684,320
Events in quadrant D9,018,001559,639

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154331
B0227641
C0156931
D0318721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7463360.482380%
B74631782.385100%
C74641461.956056%
D7463167722.470856%

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 7608 7464 7 7 0.09% 0.09%
B 7608 7464 10 10 0.13% 0.13%
C 7609 7465 3 3 0.04% 0.04%
D 7608 7464 1363 1363 17.92% 18.26%

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 14 238 41293 221.69 904 882 182.3
A 13 254 13984 71.88 904 882 182.3
A 3 1 9343 46.42 904 882 182.3
B 6 159 2187705 12575.52 901 878 173.9
B 0 189 64350 365.0 901 878 173.9
B 15 33 24717 137.09 901 878 173.9
C 14 238 155611 758.15 870 876 204.1
C 3 233 89917 436.27 870 876 204.1
C 10 22 38089 182.33 870 876 204.1
D 7 80 5449389 28807.86 791 768 189.1
D 8 195 403032 2126.84 791 768 189.1
D 2 250 152301 801.18 791 768 189.1

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