ASTROSAT CZTI

Data Quality Report

Orbit 42808

Creation date: 2024-06-27T22:44:29.826186
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/AS1C06_010T01_9000005824_42808cztM0_level2.fits modeM0/AS1C06_010T01_9000005824_42808cztM0_level2_quad_clean.evt
Size (bytes)64,048,32015,713,280
Size61.1 MB 15.0 MB
Events in quadrant A563,381106,247
Events in quadrant B494,456110,889
Events in quadrant C585,329102,847
Events in quadrant D660,87991,788

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022221
B019761
C022421
D025101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81980.976801%
B819121.465201%
C819222.686203%
D819506.105006%

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 819 819 3 3 0.37% 0.37%
B 819 819 8 8 0.98% 0.98%
C 819 819 19 19 2.32% 2.32%
D 819 819 50 50 6.11% 6.11%

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 83 171640 7992.21 95 93 21.5
A 12 189 14426 667.76 95 93 21.5
A 13 248 3001 135.48 95 93 21.5
B 0 229 69031 3364.29 97 95 20.5
B 4 171 24753 1203.39 97 95 20.5
B 0 245 6165 296.23 97 95 20.5
C 4 254 110608 4552.51 97 97 24.3
C 15 214 37067 1522.98 97 97 24.3
C 8 79 33101 1359.6 97 97 24.3
D 12 233 90755 3723.58 93 90 24.3
D 13 249 81867 3358.55 93 90 24.3
D 5 171 45515 1865.59 93 90 24.3

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