ASTROSAT CZTI

Data Quality Report

Orbit 19601

Creation date: 2024-06-27T18:04:38.922318
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/AS1T03_115T01_9000002914_19601cztM0_level2.evt modeM0/AS1T03_115T01_9000002914_19601cztM0_level2_quad_clean.evt
Size (bytes)429,408,00091,275,840
Size409.5 MB 87.0 MB
Events in quadrant A3,154,629588,876
Events in quadrant B3,207,173589,529
Events in quadrant C3,099,975564,620
Events in quadrant D3,098,925566,066

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135601
B0136481
C0134492
D0137441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65261382.114618%
B65271312.007048%
C65261372.099295%
D65261121.716212%

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 7216 6526 2 2 0.03% 0.03%
B 7217 6527 1 1 0.01% 0.02%
C 7216 6526 0 0 0.00% 0.00%
D 7216 6526 8 8 0.11% 0.12%

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 11 29 36711 220.77 801 782 162.7
A 3 243 14518 84.4 801 782 162.7
A 9 143 11358 64.99 801 782 162.7
B 3 64 24772 160.52 792 772 149.5
B 12 111 17984 115.12 792 772 149.5
B 0 190 17035 108.77 792 772 149.5
C 14 238 118063 662.56 758 762 177.0
C 3 233 20772 113.02 758 762 177.0
C 13 61 5272 25.47 758 762 177.0
D 1 52 64551 339.77 776 754 187.8
D 7 38 33395 173.84 776 754 187.8
D 13 172 26413 136.66 776 754 187.8

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