ASTROSAT CZTI

Data Quality Report

Orbit 20023

Creation date: 2024-06-27T18:10:13.741933
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/AS1C04_001T01_9000002984_20023cztM0_level2.evt modeM0/AS1C04_001T01_9000002984_20023cztM0_level2_quad_clean.evt
Size (bytes)681,768,000121,645,440
Size650.2 MB 116.0 MB
Events in quadrant A4,494,277816,541
Events in quadrant B4,074,853817,217
Events in quadrant C3,718,172812,069
Events in quadrant D7,842,593706,281

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185252
B0172222
C0161492
D0288432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76412162.826855%
B7641941.230205%
C76411331.740610%
D7641163321.371548%

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 7886 7642 134 134 1.70% 1.75%
B 7886 7642 10 10 0.13% 0.13%
C 7886 7642 9 9 0.11% 0.12%
D 7886 7642 1443 1443 18.30% 18.88%

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 14 254 443541 2456.71 891 873 180.2
A 14 238 408766 2263.72 891 873 180.2
A 5 16 144116 794.97 891 873 180.2
B 0 189 181816 1058.12 899 875 171.0
B 0 197 146025 848.82 899 875 171.0
B 7 220 64746 373.51 899 875 171.0
C 14 238 135391 660.75 876 879 203.6
C 3 233 123854 604.08 876 879 203.6
C 0 207 26914 127.89 876 879 203.6
D 7 38 3847742 19539.03 814 792 196.9
D 7 238 247509 1253.1 814 792 196.9
D 12 227 221925 1123.16 814 792 196.9

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