ASTROSAT CZTI

Data Quality Report

Orbit 18211

Creation date: 2024-06-27T17:46:48.859941
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/AS1T03_003T01_9000002712_18211cztM0_level2.evt modeM0/AS1T03_003T01_9000002712_18211cztM0_level2_quad_clean.evt
Size (bytes)576,000,00068,662,080
Size549.3 MB 65.5 MB
Events in quadrant A4,078,792409,442
Events in quadrant B3,642,287413,805
Events in quadrant C3,423,507401,204
Events in quadrant D5,838,181379,661

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163221
B0146681
C0141351
D0218171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68113264.786375%
B68121131.658837%
C68121091.600117%
D68125297.765708%

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 7786 6812 123 123 1.58% 1.81%
B 7787 6813 15 15 0.19% 0.22%
C 7787 6813 0 0 0.00% 0.00%
D 7787 6813 468 468 6.01% 6.87%

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 15 174 710983 4042.25 868 849 175.7
A 4 208 21361 116.76 868 849 175.7
A 0 226 7486 37.78 868 849 175.7
B 4 171 86370 512.1 872 851 167.0
B 7 220 72575 429.49 872 851 167.0
B 12 111 19220 110.0 872 851 167.0
C 14 238 131425 662.76 841 846 197.0
C 3 233 14326 68.42 841 846 197.0
C 13 61 6048 26.4 841 846 197.0
D 7 238 2224191 10658.88 845 819 208.6
D 5 222 194854 930.2 845 819 208.6
D 5 51 76624 363.41 845 819 208.6

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