ASTROSAT CZTI

Data Quality Report

Orbit 46915

Creation date: 2024-06-27T23:29:24.169102
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/AS1A13_053T01_9000006282_46915cztM0_level2.fits modeM0/AS1A13_053T01_9000006282_46915cztM0_level2_quad_clean.evt
Size (bytes)730,154,880131,264,640
Size696.3 MB 125.2 MB
Events in quadrant A7,672,239904,706
Events in quadrant B9,840,768810,602
Events in quadrant C3,684,428876,864
Events in quadrant D5,176,010794,150

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281320
B0352796
C0174101
D0214090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84601521.796690%
B8458141616.741546%
C8460210.248227%
D84603093.652482%

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 8460 8460 1 1 0.01% 0.01%
B 8460 8459 603 603 7.13% 7.13%
C 8460 8460 2 2 0.02% 0.02%
D 8460 8460 287 287 3.39% 3.39%

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 10 83 3966396 20071.67 944 921 197.6
A 7 3 26236 128.13 944 921 197.6
A 13 248 15994 76.29 944 921 197.6
B 3 112 6103949 34422.87 901 874 177.3
B 5 172 49210 272.63 901 874 177.3
B 0 198 32542 178.62 901 874 177.3
C 14 254 52293 234.38 929 933 219.1
C 15 208 8846 36.11 929 933 219.1
C 13 61 6276 24.38 929 933 219.1
D 2 249 921312 4025.54 914 883 228.6
D 13 249 348284 1519.38 914 883 228.6
D 1 52 188850 822.08 914 883 228.6

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