ASTROSAT CZTI

Data Quality Report

Orbit 24091

Creation date: 2024-06-27T19:02:03.142113
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_182T01_9000003560_24091cztM0_level2.evt modeM0/AS1T03_182T01_9000003560_24091cztM0_level2_quad_clean.evt
Size (bytes)634,806,72077,526,720
Size605.4 MB 73.9 MB
Events in quadrant A3,617,077470,069
Events in quadrant B3,829,568472,586
Events in quadrant C3,829,547451,214
Events in quadrant D7,447,808438,199

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153502
B0159832
C0155472
D0272632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7403630.851006%
B74031081.458868%
C7404991.337115%
D74047379.954079%

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 7773 7404 0 0 0.00% 0.00%
B 7773 7404 10 10 0.13% 0.14%
C 7774 7405 0 0 0.00% 0.00%
D 7774 7405 578 578 7.44% 7.81%

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 2 250 19376 98.16 929 908 188.1
A 13 254 13645 67.7 929 908 188.1
A 3 137 8165 38.57 929 908 188.1
B 0 189 56167 310.8 924 901 177.8
B 0 229 48773 269.22 924 901 177.8
B 5 172 26761 145.43 924 901 177.8
C 14 238 139081 658.47 887 894 209.9
C 7 247 99066 467.8 887 894 209.9
C 10 91 89169 420.64 887 894 209.9
D 1 52 1397897 6438.26 882 854 217.0
D 8 195 1393133 6416.31 882 854 217.0
D 12 218 610401 2809.09 882 854 217.0

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