ASTROSAT CZTI

Data Quality Report

Orbit 26116

Creation date: 2024-06-27T19:25:00.767200
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/AS1A09_138T04_9000003776_26116cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26116cztM0_level2_quad_clean.evt
Size (bytes)522,815,04095,371,200
Size498.6 MB 91.0 MB
Events in quadrant A3,520,855604,547
Events in quadrant B3,568,445619,608
Events in quadrant C3,569,637581,939
Events in quadrant D4,683,642578,611

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148580
B0148520
C0149460
D0184220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72221391.924675%
B72231592.201301%
C72231782.464350%
D72233084.264156%

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 7652 7222 0 0 0.00% 0.00%
B 7653 7223 0 0 0.00% 0.00%
C 7653 7223 1 1 0.01% 0.01%
D 7653 7223 217 217 2.84% 3.00%

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 10306 51.69 910 892 182.1
A 3 137 8449 41.49 910 892 182.1
A 0 13 8060 39.36 910 892 182.1
B 12 111 20966 114.67 901 878 175.2
B 0 229 19404 105.75 901 878 175.2
B 11 111 19087 103.94 901 878 175.2
C 14 238 139865 683.04 867 873 203.5
C 3 233 26442 125.65 867 873 203.5
C 2 16 23540 111.39 867 873 203.5
D 12 233 783941 3756.54 876 855 208.5
D 1 52 409844 1961.96 876 855 208.5
D 7 80 88032 418.2 876 855 208.5

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