ASTROSAT CZTI

Data Quality Report

Orbit 29828

Creation date: 2024-06-27T20:08:06.066435
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_291T01_9000004278_29828cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29828cztM0_level2_quad_clean.evt
Size (bytes)691,410,240129,009,600
Size659.4 MB 123.0 MB
Events in quadrant A4,168,541853,653
Events in quadrant B6,929,396852,359
Events in quadrant C4,282,681812,541
Events in quadrant D4,967,193781,769

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180983
B0269413
C0182753
D0202443

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8737670.766854%
B87373093.536683%
C87372242.563809%
D87372372.712602%

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 9052 8740 0 0 0.00% 0.00%
B 9052 8740 12 12 0.13% 0.14%
C 9052 8740 3 3 0.03% 0.03%
D 9052 8740 119 119 1.31% 1.36%

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 13 254 16092 69.19 1077 1054 217.4
A 12 96 12321 51.84 1077 1054 217.4
A 3 137 10941 45.49 1077 1054 217.4
B 6 159 2575843 12636.65 1065 1038 203.8
B 0 190 99218 481.85 1065 1038 203.8
B 4 171 34579 164.61 1065 1038 203.8
C 14 238 170240 695.63 1036 1041 243.2
C 10 22 39384 157.64 1036 1041 243.2
C 2 114 20968 81.93 1036 1041 243.2
D 8 195 555077 2265.61 1027 1000 244.6
D 13 104 301554 1228.96 1027 1000 244.6
D 2 250 153211 622.39 1027 1000 244.6

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