ASTROSAT CZTI

Data Quality Report

Orbit 22018

Creation date: 2024-06-27T18:35:22.937312
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/AS1A07_153T02_9000003250_22018cztM0_level2.evt modeM0/AS1A07_153T02_9000003250_22018cztM0_level2_quad_clean.evt
Size (bytes)186,284,16031,409,280
Size177.7 MB 30.0 MB
Events in quadrant A1,288,698198,911
Events in quadrant B1,458,457199,505
Events in quadrant C1,251,347189,559
Events in quadrant D1,472,648184,620

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053420
B059100
C052430
D060140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2474491.980598%
B24751014.080808%
C2475632.545455%
D2475823.313131%

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 3729 2474 0 0 0.00% 0.00%
B 3730 2475 40 40 1.07% 1.62%
C 3730 2475 0 0 0.00% 0.00%
D 3730 2475 29 29 0.78% 1.17%

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 3 1 14308 205.42 330 323 68.1
A 13 254 4778 65.44 330 323 68.1
A 0 226 2968 38.85 330 323 68.1
B 3 64 130861 2067.62 326 318 63.1
B 0 190 29503 462.25 326 318 63.1
B 0 245 12637 195.12 326 318 63.1
C 14 238 49845 684.55 307 309 72.4
C 13 61 2201 26.15 307 309 72.4
C 10 22 1979 23.08 307 309 72.4
D 7 238 111056 1447.5 310 302 76.5
D 1 52 82450 1073.63 310 302 76.5
D 13 172 52883 687.21 310 302 76.5

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