ASTROSAT CZTI

Data Quality Report

Orbit 21807

Creation date: 2024-06-27T18:32:27.607800
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_006T02_9000003228_21807cztM0_level2.evt modeM0/AS1A07_006T02_9000003228_21807cztM0_level2_quad_clean.evt
Size (bytes)997,781,760197,127,360
Size951.6 MB 188.0 MB
Events in quadrant A7,133,0811,264,214
Events in quadrant B7,266,1421,278,535
Events in quadrant C6,741,4361,243,258
Events in quadrant D8,102,6391,190,586

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304192
B0305192
C0293952
D0336972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02900
B02900
C02900
D02900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144061941.346661%
B144072351.631152%
C144072581.790796%
D144074202.915250%

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 15466 14406 9 9 0.06% 0.06%
B 15467 14408 40 40 0.26% 0.28%
C 15467 14408 2 2 0.01% 0.01%
D 15467 14407 247 247 1.60% 1.71%

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 14 235 431277 1225.96 1735 1691 350.4
A 13 254 26790 71.63 1735 1691 350.4
A 0 226 15282 38.79 1735 1691 350.4
B 3 64 228750 686.35 1731 1685 330.8
B 0 190 101970 303.13 1731 1685 330.8
B 0 230 41748 121.1 1731 1685 330.8
C 14 238 257392 656.87 1659 1667 389.3
C 10 22 18220 42.52 1659 1667 389.3
C 13 61 11705 25.78 1659 1667 389.3
D 1 52 818232 1994.27 1673 1623 409.5
D 13 104 362174 880.51 1673 1623 409.5
D 13 153 322827 784.42 1673 1623 409.5

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