ASTROSAT CZTI

Data Quality Report

Orbit 13925

Creation date: 2024-06-27T16:47:59.017499
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/AS1A04_219T01_9000002054_13925cztM0_level2.evt modeM0/AS1A04_219T01_9000002054_13925cztM0_level2_quad_clean.evt
Size (bytes)133,326,72034,001,280
Size127.2 MB 32.4 MB
Events in quadrant A795,937231,467
Events in quadrant B827,043236,118
Events in quadrant C823,767234,915
Events in quadrant D1,483,146212,203

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032961
B033911
C033521
D054671

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155350.321958%
B155390.579524%
C155310.064392%
D155316110.367032%

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 1554 1554 0 0 0.00% 0.00%
B 1554 1554 1 1 0.06% 0.06%
C 1554 1554 1 1 0.06% 0.06%
D 1554 1554 106 106 6.82% 6.82%

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 1 162 9649 224.2 202 198 42.2
A 1 178 3009 66.68 202 198 42.2
A 1 161 2763 60.85 202 198 42.2
B 0 244 13844 348.05 201 197 39.2
B 4 142 7050 174.78 201 197 39.2
B 0 230 6014 148.36 201 197 39.2
C 3 233 38786 809.04 200 202 47.7
C 14 234 2237 42.67 200 202 47.7
C 13 61 1419 25.52 200 202 47.7
D 13 122 308213 6650.11 191 187 46.3
D 1 52 300671 6487.28 191 187 46.3
D 10 157 80543 1734.84 191 187 46.3

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