ASTROSAT CZTI

Data Quality Report

Orbit 30604

Creation date: 2024-06-27T20:17:33.329362
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_058T03_9000004408_30604cztM0_level2.evt modeM0/AS1A10_058T03_9000004408_30604cztM0_level2_quad_clean.evt
Size (bytes)720,169,920112,965,120
Size686.8 MB 107.7 MB
Events in quadrant A4,221,107745,179
Events in quadrant B6,001,818743,870
Events in quadrant C4,258,702708,820
Events in quadrant D6,813,588692,025

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172992
B0234272
C0176462
D0258512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76311572.057397%
B76301972.581913%
C76302042.673657%
D76301842.411533%

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 7976 7632 62 62 0.78% 0.81%
B 7975 7631 9 9 0.11% 0.12%
C 7975 7631 17 17 0.21% 0.22%
D 7975 7631 55 55 0.69% 0.72%

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 443545 2266.0 970 952 195.3
A 12 96 27224 134.51 970 952 195.3
A 13 254 13147 62.44 970 952 195.3
B 6 159 2108536 11513.07 952 928 183.1
B 0 229 92702 501.33 952 928 183.1
B 4 171 26872 141.72 952 928 183.1
C 3 233 253962 1182.59 913 917 214.0
C 15 208 252843 1177.36 913 917 214.0
C 14 238 148834 691.28 913 917 214.0
D 8 195 2650283 12051.21 929 905 219.8
D 5 222 262277 1188.9 929 905 219.8
D 1 52 232157 1051.89 929 905 219.8

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