ASTROSAT CZTI

Data Quality Report

Orbit 21054

Creation date: 2024-06-27T18:23:00.759714
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/AS1A05_025T04_9000003110_21054cztM0_level2.evt modeM0/AS1A05_025T04_9000003110_21054cztM0_level2_quad_clean.evt
Size (bytes)1,282,754,880217,005,120
Size1.2 GB 207.0 MB
Events in quadrant A8,154,2971,358,456
Events in quadrant B9,412,8821,380,472
Events in quadrant C8,219,3201,329,866
Events in quadrant D11,862,9411,280,947

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0361113
B0392713
C0360793
D0472343

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177381941.093697%
B177393622.040701%
C177392571.448785%
D1773810045.660165%

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 19608 17740 0 0 0.00% 0.00%
B 19609 17741 88 88 0.45% 0.50%
C 19609 17742 0 0 0.00% 0.00%
D 19608 17741 737 737 3.76% 4.15%

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 13 252 32311 71.87 2106 2063 420.9
A 13 254 25489 55.66 2106 2063 420.9
A 0 226 17990 37.84 2106 2063 420.9
B 7 220 424436 1067.07 2091 2035 395.9
B 7 205 226957 568.2 2091 2035 395.9
B 0 228 148708 370.52 2091 2035 395.9
C 14 238 316920 666.58 2024 2035 472.4
C 3 9 16709 31.06 2024 2035 472.4
C 13 61 14192 25.73 2024 2035 472.4
D 1 52 2132971 4352.54 2024 1964 489.6
D 7 238 1677695 3422.65 2024 1964 489.6
D 13 172 107538 215.63 2024 1964 489.6

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