ASTROSAT CZTI

Data Quality Report

Orbit 16851

Creation date: 2024-06-27T17:28:37.972437
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/AS1A05_056T01_9000002498_16851cztM0_level2.evt modeM0/AS1A05_056T01_9000002498_16851cztM0_level2_quad_clean.evt
Size (bytes)534,107,52099,060,480
Size509.4 MB 94.5 MB
Events in quadrant A3,901,901630,077
Events in quadrant B4,043,267639,277
Events in quadrant C3,716,655606,463
Events in quadrant D4,002,374600,190

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165223
B0167852
C0158662
D0169802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75312673.545346%
B75311842.443235%
C75311702.257336%
D75311361.805869%

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 9357 7534 126 126 1.35% 1.67%
B 9357 7534 6 6 0.06% 0.08%
C 9357 7534 1 1 0.01% 0.01%
D 9357 7534 35 35 0.37% 0.46%

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 23 310636 1649.79 928 908 187.7
A 0 226 25485 130.91 928 908 187.7
A 9 143 8880 42.46 928 908 187.7
B 10 16 229941 1263.64 940 917 181.2
B 15 35 72448 394.67 940 917 181.2
B 0 229 66675 362.82 940 917 181.2
C 14 238 139943 662.86 900 909 209.7
C 0 207 43875 204.84 900 909 209.7
C 3 233 15776 70.88 900 909 209.7
D 1 52 443949 1984.08 914 887 223.3
D 5 222 52226 229.9 914 887 223.3
D 15 145 43199 189.48 914 887 223.3

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