ASTROSAT CZTI

Data Quality Report

Orbit 24558

Creation date: 2024-06-27T19:07:14.311538
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_187T01_9000003608_24558cztM0_level2.evt modeM0/AS1T03_187T01_9000003608_24558cztM0_level2_quad_clean.evt
Size (bytes)1,475,832,960297,941,760
Size1.4 GB 284.1 MB
Events in quadrant A8,620,7971,986,071
Events in quadrant B8,565,2522,010,082
Events in quadrant C8,774,1271,921,812
Events in quadrant D17,504,7881,848,537

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375093
B0371543
C0377943
D0647273

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182511480.810914%
B182511150.630102%
C182512361.293080%
D182519755.342173%

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 20471 18254 44 44 0.21% 0.24%
B 20471 18254 1 1 0.00% 0.01%
C 20471 18254 23 23 0.11% 0.13%
D 20471 18254 957 957 4.67% 5.24%

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 6 16 188247 428.6 2178 2128 434.2
A 10 255 29098 62.11 2178 2128 434.2
A 13 254 28976 61.83 2178 2128 434.2
B 12 111 50724 118.21 2167 2113 411.2
B 11 111 45965 106.63 2167 2113 411.2
B 14 111 40375 93.04 2167 2113 411.2
C 14 238 335832 687.97 2093 2103 485.1
C 2 16 173598 353.53 2093 2103 485.1
C 5 112 66084 131.89 2093 2103 485.1
D 8 195 8526920 16674.52 2105 2042 511.3
D 1 52 428792 834.71 2105 2042 511.3
D 12 218 343971 668.81 2105 2042 511.3

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