ASTROSAT CZTI

Data Quality Report

Orbit 23656

Creation date: 2024-06-27T18:57:16.069078
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_091T04_9000003492_23656cztM0_level2.evt modeM0/AS1A07_091T04_9000003492_23656cztM0_level2_quad_clean.evt
Size (bytes)1,511,510,400291,790,080
Size1.4 GB 278.3 MB
Events in quadrant A10,111,1221,861,595
Events in quadrant B11,477,1321,921,524
Events in quadrant C10,258,5471,839,819
Events in quadrant D12,496,3791,754,385

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0437385
B0475355
C0440985
D0518575

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04340
B04340
C04340
D04340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21202840.396189%
B212023251.532874%
C212032120.999859%
D212036032.843937%

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 35631 21207 1 1 0.00% 0.00%
B 35631 21206 112 112 0.31% 0.53%
C 35631 21208 4 4 0.01% 0.02%
D 35631 21208 369 369 1.04% 1.74%

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 33080 59.04 2620 2569 516.8
A 0 226 22361 38.3 2620 2569 516.8
A 3 137 22277 38.13 2620 2569 516.8
B 0 229 500135 1026.49 2613 2553 484.7
B 3 64 300627 614.92 2613 2553 484.7
B 0 189 277083 566.35 2613 2553 484.7
C 14 238 406575 697.85 2513 2530 579.0
C 7 247 50668 83.14 2513 2530 579.0
C 13 61 17721 26.24 2513 2530 579.0
D 1 52 1193445 1956.3 2510 2437 608.8
D 9 85 1013141 1660.14 2510 2437 608.8
D 13 189 347737 567.18 2510 2437 608.8

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