ASTROSAT CZTI

Data Quality Report

Orbit 19856

Creation date: 2024-06-27T18:07:56.029422
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_118T01_9000002962_19856cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19856cztM0_level2_quad_clean.evt
Size (bytes)766,218,24065,848,320
Size730.7 MB 62.8 MB
Events in quadrant A12,385,453260,832
Events in quadrant B3,296,667450,087
Events in quadrant C3,140,088428,810
Events in quadrant D3,963,455420,895

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01286
B01284
C01282
D01282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0425181522
B014154341
C013515308
D016390397

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6131456074.376121%
B6217741.190285%
C6219631.013025%
D62101131.819646%

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 7504 6157 3916 3916 52.19% 63.60%
B 7503 6289 19 19 0.25% 0.30%
C 7511 6292 0 0 0.00% 0.00%
D 7511 6285 76 76 1.01% 1.21%

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 14 238 10070855 106048.16 471 462 95.0
A 14 254 490620 5161.7 471 462 95.0
A 5 16 9794 98.27 471 462 95.0
B 3 64 68429 448.05 797 778 151.0
B 7 220 39327 255.31 797 778 151.0
B 4 216 29660 191.28 797 778 151.0
C 14 238 120163 663.21 770 776 180.0
C 9 221 7837 39.22 770 776 180.0
C 3 233 7327 36.39 770 776 180.0
D 2 184 591767 3170.95 772 750 186.4
D 1 52 345194 1848.03 772 750 186.4
D 12 218 51970 274.81 772 750 186.4

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