ASTROSAT CZTI

Data Quality Report

Orbit 22140

Creation date: 2024-06-27T18:37:20.246842
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_145T01_9000003278_22140cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22140cztM0_level2_quad_clean.evt
Size (bytes)1,217,707,200239,106,240
Size1.1 GB 228.0 MB
Events in quadrant A8,453,8031,525,249
Events in quadrant B8,658,2041,543,023
Events in quadrant C8,669,0101,464,660
Events in quadrant D9,854,8351,443,262

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374424
B0376024
C0378944
D0419214

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03720
D03720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18370750.408274%
B183711100.598770%
C183701570.854654%
D183702371.290147%

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 20430 18373 3 3 0.01% 0.02%
B 20431 18374 5 5 0.02% 0.03%
C 20430 18373 17 17 0.08% 0.09%
D 20430 18373 142 142 0.70% 0.77%

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 5 16 47185 102.77 2180 2137 438.3
A 13 254 33941 72.56 2180 2137 438.3
A 3 137 19210 38.95 2180 2137 438.3
B 12 111 51763 120.05 2175 2117 413.6
B 11 111 46118 106.4 2175 2117 413.6
B 14 111 40912 93.81 2175 2117 413.6
C 14 238 330390 674.44 2087 2099 486.8
C 10 22 201920 410.51 2087 2099 486.8
C 13 61 14685 25.86 2087 2099 486.8
D 1 52 1304240 2575.25 2103 2041 505.7
D 13 104 425542 837.52 2103 2041 505.7
D 2 234 79136 152.46 2103 2041 505.7

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