ASTROSAT CZTI

Data Quality Report

Orbit 29624

Creation date: 2024-06-27T20:06:09.717264
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_286T01_9000004268_29624cztM0_level2.evt modeM0/AS1T03_286T01_9000004268_29624cztM0_level2_quad_clean.evt
Size (bytes)1,428,114,240258,353,280
Size1.3 GB 246.4 MB
Events in quadrant A8,699,9571,669,700
Events in quadrant B8,953,1401,704,032
Events in quadrant C9,593,8271,624,589
Events in quadrant D14,719,3641,516,913

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387524
B0389994
C0408454
D0562234

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189893842.022223%
B189904672.459189%
C189907814.112691%
D1899017249.078462%

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 20764 18989 2 2 0.01% 0.01%
B 20765 18990 19 19 0.09% 0.10%
C 20765 18991 131 131 0.63% 0.69%
D 20765 18990 1165 1165 5.61% 6.13%

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 13 254 32842 67.26 2244 2192 455.7
A 12 96 26817 54.04 2244 2192 455.7
A 3 137 23035 45.74 2244 2192 455.7
B 0 230 69677 158.93 2230 2170 424.8
B 12 111 54744 123.78 2230 2170 424.8
B 11 111 49691 111.88 2230 2170 424.8
C 10 22 616970 1230.11 2142 2149 499.8
C 14 238 381259 758.51 2142 2149 499.8
C 3 233 131646 259.09 2142 2149 499.8
D 7 238 4371215 8893.02 2090 2033 491.3
D 8 195 963450 1956.86 2090 2033 491.3
D 12 227 776852 1577.06 2090 2033 491.3

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