ASTROSAT CZTI

Data Quality Report

Orbit 24526

Creation date: 2024-06-27T19:06:55.658754
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_183T01_9000003606_24526cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24526cztM0_level2_quad_clean.evt
Size (bytes)663,114,240144,305,280
Size632.4 MB 137.6 MB
Events in quadrant A3,977,839975,066
Events in quadrant B4,690,012983,405
Events in quadrant C4,483,469934,693
Events in quadrant D6,370,078901,853

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172342
B0192762
C0187512
D0246702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82861421.713734%
B82863774.549843%
C82874585.526729%
D82873173.825268%

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 8841 8289 1 1 0.01% 0.01%
B 8841 8289 102 102 1.15% 1.23%
C 8842 8290 172 172 1.95% 2.07%
D 8842 8290 96 96 1.09% 1.16%

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 14 111 81583 401.12 994 969 201.0
A 6 16 65704 322.11 994 969 201.0
A 13 254 13664 63.17 994 969 201.0
B 3 64 772452 4081.5 984 955 189.0
B 4 200 42028 217.29 984 955 189.0
B 12 111 23315 118.29 984 955 189.0
C 2 16 626724 2855.37 942 946 219.2
C 14 238 148501 673.28 942 946 219.2
C 3 233 12700 53.63 942 946 219.2
D 1 52 2479419 10751.0 950 921 230.5
D 9 1 197288 851.78 950 921 230.5
D 12 218 55592 237.15 950 921 230.5

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