ASTROSAT CZTI

Data Quality Report

Orbit 28253

Creation date: 2024-06-27T19:49:40.341070
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/AS1A10_067T01_9000004076_28253cztM0_level2.evt modeM0/AS1A10_067T01_9000004076_28253cztM0_level2_quad_clean.evt
Size (bytes)552,337,920115,050,240
Size526.8 MB 109.7 MB
Events in quadrant A3,499,067774,982
Events in quadrant B3,674,806793,049
Events in quadrant C3,714,620734,658
Events in quadrant D5,370,376700,177

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147700
B0153990
C0154650
D0208740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6913350.506292%
B6914670.969048%
C69141151.663292%
D69144897.072606%

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 9288 6915 1 1 0.01% 0.01%
B 9289 6916 2 2 0.02% 0.03%
C 9289 6916 1 1 0.01% 0.01%
D 9289 6915 352 352 3.79% 5.09%

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 13 254 10178 51.49 905 891 180.4
A 3 137 8317 41.17 905 891 180.4
A 0 226 7725 37.89 905 891 180.4
B 10 245 97361 572.94 904 883 168.4
B 12 111 20629 117.26 904 883 168.4
B 11 111 18784 106.31 904 883 168.4
C 3 233 184159 917.47 862 870 199.8
C 14 238 142247 707.68 862 870 199.8
C 9 221 15639 73.93 862 870 199.8
D 1 52 1142342 5802.06 835 813 196.7
D 8 195 384531 1950.33 835 813 196.7
D 7 238 309178 1567.33 835 813 196.7

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