ASTROSAT CZTI

Data Quality Report

Orbit 12217

Creation date: 2024-06-27T16:23:55.273885
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/AS1A04_066T01_9000001802_12217cztM0_level2.evt modeM0/AS1A04_066T01_9000001802_12217cztM0_level2_quad_clean.evt
Size (bytes)2,509,617,600510,776,640
Size2.3 GB 487.1 MB
Events in quadrant A20,128,4153,507,996
Events in quadrant B26,211,4803,264,831
Events in quadrant C12,681,3073,546,757
Events in quadrant D15,242,6603,370,830

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05300
B05300
C05300
D05300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0779336
B0958675
C0553185
D0628875

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2586612164.701152%
B25866457617.691178%
C258663111.202351%
D258668313.212712%

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 32077 25872 470 470 1.47% 1.82%
B 32077 25872 2805 2805 8.74% 10.84%
C 32077 25872 44 44 0.14% 0.17%
D 32077 25872 418 418 1.30% 1.62%

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 13 251 5489668 8769.16 3156 3101 625.7
A 1 162 649047 1032.41 3156 3101 625.7
A 1 178 370345 586.96 3156 3101 625.7
B 4 239 7465973 14142.75 2940 2879 527.7
B 4 206 3990595 7556.82 2940 2879 527.7
B 15 204 866338 1636.28 2940 2879 527.7
C 15 208 491070 701.47 3068 3086 695.7
C 4 175 100648 140.24 3068 3086 695.7
C 0 207 64808 88.72 3068 3086 695.7
D 10 199 925140 1282.87 3056 2973 718.8
D 13 104 606741 839.93 3056 2973 718.8
D 1 52 338899 467.32 3056 2973 718.8

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