ASTROSAT CZTI

Data Quality Report

Orbit 08933

Creation date: 2024-06-27T15:39:09.569914
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/AS1A03_092T01_9000001240_08933cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08933cztM0_level2_quad_clean.evt
Size (bytes)1,234,454,400258,975,360
Size1.1 GB 247.0 MB
Events in quadrant A10,228,8491,689,604
Events in quadrant B8,296,4291,711,105
Events in quadrant C7,643,0911,666,222
Events in quadrant D10,079,9141,616,963

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03400
C03400
D03400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0412804
B0353503
C0346193
D0408125

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A168385052.999169%
B168382851.692600%
C168381701.009621%
D168374752.821168%

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 19878 16838 82 82 0.41% 0.49%
B 19878 16839 5 5 0.03% 0.03%
C 19878 16839 1 1 0.01% 0.01%
D 19878 16839 334 334 1.68% 1.98%

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 8 5 2214300 5387.99 2036 2000 410.6
A 5 16 125728 301.34 2036 2000 410.6
A 13 251 37667 86.87 2036 2000 410.6
B 0 168 109192 280.43 2039 1995 382.3
B 0 214 77313 197.03 2039 1995 382.3
B 12 111 39365 97.76 2039 1995 382.3
C 13 61 14939 29.21 1954 1965 444.1
C 9 68 6650 10.55 1954 1965 444.1
C 1 3 6644 10.54 1954 1965 444.1
D 12 233 846475 1626.02 1959 1912 519.4
D 1 52 610551 1171.8 1959 1912 519.4
D 8 195 489005 937.79 1959 1912 519.4

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