ASTROSAT CZTI

Data Quality Report

Orbit 32680

Creation date: 2024-06-27T20:40:44.370445
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_057T03_9000004722_32680cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32680cztM0_level2_quad_clean.evt
Size (bytes)909,541,440124,931,520
Size867.4 MB 119.1 MB
Events in quadrant A6,249,395783,469
Events in quadrant B5,244,345840,738
Events in quadrant C5,036,723830,324
Events in quadrant D10,451,734748,355

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242713
B0213152
C0203892
D0368872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A835490710.857074%
B83541331.592052%
C83541581.891310%
D8354220926.442423%

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 11577 8356 741 741 6.40% 8.87%
B 11577 8356 93 93 0.80% 1.11%
C 11577 8356 119 119 1.03% 1.42%
D 11577 8356 1978 1978 17.09% 23.67%

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 15 249 2582437 14256.32 913 897 181.1
A 14 63 47226 255.85 913 897 181.1
A 12 189 26893 143.56 913 897 181.1
B 3 26 390463 2118.58 972 951 183.9
B 0 219 339083 1839.12 972 951 183.9
B 4 251 141181 762.72 972 951 183.9
C 0 10 646079 3012.97 928 936 214.1
C 9 236 151982 705.42 928 936 214.1
C 8 35 144330 669.68 928 936 214.1
D 7 38 3293002 16765.24 824 807 196.4
D 2 249 831146 4228.44 824 807 196.4
D 8 195 730518 3716.0 824 807 196.4

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