ASTROSAT CZTI

Data Quality Report

Orbit 28796

Creation date: 2024-06-27T19:56:28.243016
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_103T01_9000004132_28796cztM0_level2.evt modeM0/AS1A10_103T01_9000004132_28796cztM0_level2_quad_clean.evt
Size (bytes)667,471,68088,133,760
Size636.6 MB 84.1 MB
Events in quadrant A4,189,600539,255
Events in quadrant B4,042,827550,108
Events in quadrant C4,713,106519,233
Events in quadrant D6,731,927508,537

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174952
B0169802
C0191022
D0254962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79332342.949704%
B79332593.264843%
C79334966.252364%
D79324796.038830%

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 8293 7933 8 8 0.10% 0.10%
B 8293 7933 6 6 0.07% 0.08%
C 8292 7932 47 47 0.57% 0.59%
D 8292 7932 325 325 3.92% 4.10%

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 14 235 274952 1371.46 987 964 199.8
A 15 174 62405 307.55 987 964 199.8
A 13 254 15041 70.46 987 964 199.8
B 5 255 70503 367.29 978 951 189.4
B 0 229 54382 282.16 978 951 189.4
B 12 111 23072 116.82 978 951 189.4
C 4 254 536043 2438.52 937 944 219.4
C 14 238 194220 880.79 937 944 219.4
C 3 233 188974 856.88 937 944 219.4
D 1 52 1342101 5866.33 952 924 228.6
D 8 195 852107 3723.09 952 924 228.6
D 13 104 652814 2851.38 952 924 228.6

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