ASTROSAT CZTI

Data Quality Report

Orbit 34778

Creation date: 2022-03-05T01:02:58.557043
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/AS1C07_004T01_9000004990_34778cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34778cztM0_level2_quad_clean.evt
Size (bytes)866,882,880129,683,520
Size826.7 MB 123.7 MB
Events in quadrant A5,229,049816,259
Events in quadrant B6,820,737817,402
Events in quadrant C5,208,224827,450
Events in quadrant D8,319,301772,245

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219304
B0267963
C0215253
D0316463

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10015410.409386%
B100155885.871193%
C10015500.499251%
D100154724.712931%

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 12730 10017 26 26 0.20% 0.26%
B 12730 10017 386 386 3.03% 3.85%
C 12730 10017 32 32 0.25% 0.32%
D 12730 10017 352 352 2.77% 3.51%

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 15 169 573331 2454.65 1159 1138 233.1
A 10 83 75619 319.52 1159 1138 233.1
A 7 16 57892 243.47 1159 1138 233.1
B 5 172 1568764 7164.46 1137 1107 218.8
B 4 232 208311 946.96 1137 1107 218.8
B 5 200 168903 766.86 1137 1107 218.8
C 15 214 426057 1612.12 1132 1142 263.6
C 0 10 148695 559.81 1132 1142 263.6
C 14 67 116493 437.64 1132 1142 263.6
D 8 195 2005783 7347.59 1115 1083 272.8
D 1 52 775163 2837.14 1115 1083 272.8
D 10 199 443154 1620.27 1115 1083 272.8

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