ASTROSAT CZTI

Data Quality Report

Orbit 29587

Creation date: 2024-06-27T20:05:46.246301
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/AS1A10_093T01_9000004266_29587cztM0_level2.evt modeM0/AS1A10_093T01_9000004266_29587cztM0_level2_quad_clean.evt
Size (bytes)560,171,52082,180,800
Size534.2 MB 78.4 MB
Events in quadrant A3,305,334532,688
Events in quadrant B4,282,018544,693
Events in quadrant C3,361,478503,663
Events in quadrant D5,585,424463,708

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136382
B0168043
C0138002
D0210212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6361400.628832%
B63601872.940252%
C63601432.248428%
D63605098.003145%

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 7731 6362 0 0 0.00% 0.00%
B 7730 6361 66 66 0.85% 1.04%
C 7730 6361 1 1 0.01% 0.02%
D 7730 6361 395 395 5.11% 6.21%

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 0 13 38707 223.85 845 830 169.2
A 13 254 12343 68.04 845 830 169.2
A 3 137 7677 40.46 845 830 169.2
B 0 189 673024 4300.11 846 828 156.3
B 15 33 229881 1465.27 846 828 156.3
B 0 190 26416 163.69 846 828 156.3
C 14 238 151376 807.56 807 813 186.4
C 14 254 25258 131.11 807 813 186.4
C 15 208 15217 77.26 807 813 186.4
D 7 80 1747303 9390.61 786 764 186.0
D 8 195 320680 1720.09 786 764 186.0
D 13 153 153732 822.46 786 764 186.0

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