ASTROSAT CZTI

Data Quality Report

Orbit 11404

Creation date: 2024-06-27T16:12:26.626170
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/AS1A04_022T04_9000001666_11404cztM0_level2.evt modeM0/AS1A04_022T04_9000001666_11404cztM0_level2_quad_clean.evt
Size (bytes)469,166,400105,632,640
Size447.4 MB 100.7 MB
Events in quadrant A3,086,084700,289
Events in quadrant B3,881,777684,706
Events in quadrant C2,846,134734,199
Events in quadrant D4,003,312676,868

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129222
B0152831
C0121021
D0157001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5770961.663778%
B57703385.857886%
C5770621.074523%
D57702233.864818%

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 7020 5771 5 5 0.07% 0.09%
B 7020 5771 162 162 2.31% 2.81%
C 7020 5771 0 0 0.00% 0.00%
D 7020 5771 126 126 1.79% 2.18%

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 8 5 179940 1204.95 741 725 148.7
A 1 162 20254 131.3 741 725 148.7
A 1 178 11129 69.95 741 725 148.7
B 4 239 940272 6913.14 720 703 135.9
B 3 189 78149 569.83 720 703 135.9
B 15 204 35513 256.12 720 703 135.9
C 13 61 5377 27.47 730 736 169.0
C 3 202 1827 6.46 730 736 169.0
C -1 -1 -1 -1.0 730 736 169.0
D 1 52 666004 3876.2 722 705 171.6
D 10 253 173230 1005.18 722 705 171.6
D 2 120 131682 763.11 722 705 171.6

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