ASTROSAT CZTI

Data Quality Report

Orbit 07825

Creation date: 2024-06-27T15:24:29.504965
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/AS1G06_077T02_9000001076_07825cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07825cztM0_level2_quad_clean.evt
Size (bytes)603,089,280121,780,800
Size575.2 MB 116.1 MB
Events in quadrant A4,173,602767,750
Events in quadrant B4,636,909778,647
Events in quadrant C4,566,227778,670
Events in quadrant D4,281,826743,297

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183783
B0195322
C0194232
D0189162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8935961.074426%
B89351771.980974%
C8935710.794628%
D8935780.872971%

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 10680 8937 4 4 0.04% 0.04%
B 10679 8936 79 79 0.74% 0.88%
C 10680 8937 0 0 0.00% 0.00%
D 10680 8937 15 15 0.14% 0.17%

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 0 128 39241 178.89 1068 1048 213.5
A 8 15 10023 42.04 1068 1048 213.5
A 0 226 9925 41.58 1068 1048 213.5
B 4 239 205744 998.33 1074 1050 205.0
B 0 219 76403 367.51 1074 1050 205.0
B 4 173 36875 174.73 1074 1050 205.0
C 1 16 471997 1939.52 1047 1053 242.8
C 12 4 10391 38.46 1047 1053 242.8
C 13 61 8091 28.99 1047 1053 242.8
D 13 104 96636 375.97 1045 1014 254.3
D 5 233 95595 371.87 1045 1014 254.3
D 2 152 58269 225.12 1045 1014 254.3

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