ASTROSAT CZTI

Data Quality Report

Orbit 19221

Creation date: 2024-06-27T18:00:24.255015
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_075T10_9000002842_19221cztM0_level2.evt modeM0/AS1A05_075T10_9000002842_19221cztM0_level2_quad_clean.evt
Size (bytes)609,848,640141,105,600
Size581.6 MB 134.6 MB
Events in quadrant A4,199,847928,033
Events in quadrant B4,283,783953,482
Events in quadrant C4,920,474929,462
Events in quadrant D4,521,327905,232

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177373
B0179412
C0199832
D0188172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80341351.680358%
B80341612.003983%
C80342392.974857%
D80341571.954195%

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 10584 8035 1 1 0.01% 0.01%
B 10584 8035 0 0 0.00% 0.00%
C 10584 8034 1 1 0.01% 0.01%
D 10584 8035 50 50 0.47% 0.62%

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 11 29 30457 137.76 1078 1059 213.4
A 9 143 20156 89.49 1078 1059 213.4
A 13 254 10075 42.25 1078 1059 213.4
B 3 64 29837 143.02 1083 1058 201.2
B 12 111 23641 112.23 1083 1058 201.2
B 11 111 20793 98.07 1083 1058 201.2
C 3 233 624619 2561.34 1059 1071 243.4
C 14 238 165097 673.77 1059 1071 243.4
C 13 61 7457 26.23 1059 1071 243.4
D 1 52 275809 1087.2 1069 1042 252.7
D 11 176 185673 730.55 1069 1042 252.7
D 2 234 36540 140.46 1069 1042 252.7

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