ASTROSAT CZTI

Data Quality Report

Orbit 01404

Creation date: 2024-06-27T14:12:10.479222
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/AS1G04_003T01_9000000234_01404cztM0_level2.evt modeM0/AS1G04_003T01_9000000234_01404cztM0_level2_quad_clean.evt
Size (bytes)1,048,507,20095,880,960
Size999.9 MB 91.4 MB
Events in quadrant A9,660,843601,771
Events in quadrant B7,558,286637,098
Events in quadrant C6,944,104630,209
Events in quadrant D7,183,429604,877

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330472
B0268311
C0250501
D0257251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61423385.503093%
B6142280.455878%
C614210.016281%
D6142460.748942%

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 7417 6143 1231 1231 16.60% 20.04%
B 7417 6143 249 249 3.36% 4.05%
C 7417 6143 92 92 1.24% 1.50%
D 7417 6143 355 355 4.79% 5.78%

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 15 127 2923044 6963.49 1742 1753 419.5
A 4 32 24505 54.23 1742 1753 419.5
A 3 80 10719 21.37 1742 1753 419.5
B 6 53 150700 343.12 1871 1879 433.7
B 8 4 106183 240.48 1871 1879 433.7
B 5 191 68341 153.23 1871 1879 433.7
C 15 241 216289 456.79 1707 1770 469.6
C 12 4 21296 41.58 1707 1770 469.6
C 3 111 17781 34.09 1707 1770 469.6
D 9 53 928494 1856.26 1623 1677 499.3
D 9 66 86921 170.73 1623 1677 499.3
D 1 20 39266 75.28 1623 1677 499.3

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