ASTROSAT CZTI

Data Quality Report

Orbit 21640

Creation date: 2024-06-27T18:30:33.169170
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/AS1A06_002T02_9000003206_21640cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21640cztM0_level2_quad_clean.evt
Size (bytes)490,726,08082,025,280
Size468.0 MB 78.2 MB
Events in quadrant A3,296,152520,052
Events in quadrant B3,771,295535,264
Events in quadrant C3,315,334499,049
Events in quadrant D4,038,939477,183

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135992
B0152062
C0136472
D0161112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6491210.323525%
B64911031.586813%
C6490711.093991%
D6490520.801233%

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 7876 6492 0 0 0.00% 0.00%
B 7876 6492 50 50 0.63% 0.77%
C 7875 6491 1 1 0.01% 0.02%
D 7875 6491 32 32 0.41% 0.49%

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 10 253 24236 139.01 850 834 168.3
A 13 254 9276 50.15 850 834 168.3
A 0 226 7407 39.04 850 834 168.3
B 3 64 220619 1399.53 853 835 157.0
B 0 229 72138 454.04 853 835 157.0
B 6 36 43581 272.2 853 835 157.0
C 14 238 132296 697.05 813 820 188.6
C 13 61 5719 25.97 813 820 188.6
C 10 34 5206 23.25 813 820 188.6
D 13 104 446223 2328.99 807 786 191.3
D 1 52 166567 866.79 807 786 191.3
D 2 136 132356 687.92 807 786 191.3

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