ASTROSAT CZTI

Data Quality Report

Orbit 18516

Creation date: 2024-06-27T17:50:53.785037
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_187T03_9000002748_18516cztM0_level2.evt modeM0/AS1A05_187T03_9000002748_18516cztM0_level2_quad_clean.evt
Size (bytes)686,952,00087,500,160
Size655.1 MB 83.4 MB
Events in quadrant A3,571,045568,353
Events in quadrant B3,706,378575,124
Events in quadrant C4,786,134546,035
Events in quadrant D8,255,142459,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153232
B0157412
C0190082
D0294992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7187620.862669%
B7188921.279911%
C71881341.864218%
D718897113.508625%

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 8682 7189 32 32 0.37% 0.45%
B 8683 7190 29 29 0.33% 0.40%
C 8683 7189 20 20 0.23% 0.28%
D 8683 7188 885 885 10.19% 12.31%

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 190070 1079.38 864 845 175.3
A 15 174 26755 147.8 864 845 175.3
A 15 192 14288 76.68 864 845 175.3
B 7 220 213632 1253.37 867 843 169.8
B 0 228 24449 139.04 867 843 169.8
B 12 111 19951 112.55 867 843 169.8
C 3 233 1296906 6668.03 828 833 194.4
C 14 238 128199 655.27 828 833 194.4
C 0 207 124541 636.45 828 833 194.4
D 13 168 4007208 20986.96 772 750 190.9
D 1 52 597290 3124.85 772 750 190.9
D 7 238 559691 2927.89 772 750 190.9

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