ASTROSAT CZTI

Data Quality Report

Orbit 18573

Creation date: 2024-06-27T17:51:51.576288
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/AS1A05_167T01_9000002758_18573cztM0_level2.evt modeM0/AS1A05_167T01_9000002758_18573cztM0_level2_quad_clean.evt
Size (bytes)133,306,56029,937,600
Size127.1 MB 28.6 MB
Events in quadrant A846,901197,841
Events in quadrant B855,300204,329
Events in quadrant C876,499197,486
Events in quadrant D1,345,471186,783

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034791
B035001
C035411
D051311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1621181.110426%
B1621140.863664%
C1621271.665638%
D16211086.662554%

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 1621 1621 12 12 0.74% 0.74%
B 1621 1621 5 5 0.31% 0.31%
C 1621 1621 4 4 0.25% 0.25%
D 1621 1621 82 82 5.06% 5.06%

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 4 2 35865 810.91 208 204 44.0
A 14 111 9190 204.34 208 204 44.0
A 13 254 3112 66.13 208 204 44.0
B 6 36 14829 343.68 213 208 42.5
B 0 198 6275 142.6 213 208 42.5
B 12 111 4873 109.65 213 208 42.5
C 14 238 32636 644.24 207 207 50.3
C 3 233 12563 245.47 207 207 50.3
C 4 254 10541 205.3 207 207 50.3
D 1 52 275002 5342.67 201 195 51.4
D 7 238 173257 3364.59 201 195 51.4
D 9 1 63012 1221.26 201 195 51.4

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