ASTROSAT CZTI

Data Quality Report

Orbit 37306

Creation date: 2024-06-27T21:38:08.797388
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_094T14_9000005308_37306cztM0_level2.evt modeM0/AS1A10_094T14_9000005308_37306cztM0_level2_quad_clean.evt
Size (bytes)114,330,24022,196,160
Size109.0 MB 21.2 MB
Events in quadrant A647,926146,241
Events in quadrant B760,884149,056
Events in quadrant C687,205152,740
Events in quadrant D1,281,654132,407

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026722
B030221
C027431
D046091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A120630.248756%
B1206342.819237%
C1206272.238806%
D120628423.548922%

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 3179 1207 0 0 0.00% 0.00%
B 3179 1207 21 21 0.66% 1.74%
C 3179 1207 24 24 0.75% 1.99%
D 3179 1207 267 267 8.40% 22.12%

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 10 83 95519 3234.9 136 133 29.5
A 13 248 14500 487.24 136 133 29.5
A 10 248 3700 120.97 136 133 29.5
B 4 171 116316 4227.23 133 129 27.5
B 12 18 50653 1838.21 133 129 27.5
B 0 213 48703 1767.27 133 129 27.5
C 0 10 90850 2815.53 133 134 32.2
C 15 214 53780 1664.99 133 134 32.2
C 14 254 12383 380.17 133 134 32.2
D 10 253 600449 18607.02 126 122 32.3
D 10 199 62973 1948.05 126 122 32.3
D 2 249 50786 1570.32 126 122 32.3

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