ASTROSAT CZTI

Data Quality Report

Orbit 00924

Creation date: 2024-06-27T14:04:49.344690
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/AS1P01_163T03_9000000186_00924cztM0_level2.evt modeM0/AS1P01_163T03_9000000186_00924cztM0_level2_quad_clean.evt
Size (bytes)1,101,746,88081,734,400
Size1.0 GB 77.9 MB
Events in quadrant A8,257,543507,629
Events in quadrant B8,819,864508,155
Events in quadrant C8,075,689499,468
Events in quadrant D7,769,425492,286

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293140
B0309440
C0287530
D0278670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6707630.939317%
B6707871.297152%
C6707620.924407%
D6708510.760286%

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 7852 6708 246 246 3.13% 3.67%
B 7852 6708 356 356 4.53% 5.31%
C 7852 6708 214 214 2.73% 3.19%
D 7853 6709 205 205 2.61% 3.06%

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 8 192 23715 41.99 2143 2156 513.4
A 15 127 12437 20.02 2143 2156 513.4
A 11 79 7090 9.61 2143 2156 513.4
B 7 221 100593 189.9 2217 2228 518.0
B 0 182 92161 173.62 2217 2228 518.0
B 5 249 52709 97.46 2217 2228 518.0
C 15 241 223656 401.11 1987 2054 552.5
C 3 111 28026 47.01 1987 2054 552.5
C 12 254 22939 37.8 1987 2054 552.5
D 1 4 168021 273.44 1971 2041 607.0
D 12 188 115897 187.57 1971 2041 607.0
D 13 171 43540 68.37 1971 2041 607.0

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