ASTROSAT CZTI

Data Quality Report

Orbit 06265

Creation date: 2024-06-27T15:04:53.550323
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/AS1C02_018T01_9000000822_06265cztM0_level2.evt modeM0/AS1C02_018T01_9000000822_06265cztM0_level2_quad_clean.evt
Size (bytes)462,251,52092,972,160
Size440.8 MB 88.7 MB
Events in quadrant A3,028,653604,342
Events in quadrant B3,200,315612,486
Events in quadrant C2,669,322618,641
Events in quadrant D4,707,516574,898

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128142
B0132561
C0119271
D0177941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5796871.501035%
B57961212.087647%
C5796440.759144%
D57963546.107660%

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 6951 5796 17 17 0.24% 0.29%
B 6951 5796 41 41 0.59% 0.71%
C 6951 5796 0 0 0.00% 0.00%
D 6951 5796 345 345 4.96% 5.95%

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 3 80 213725 1463.36 710 696 145.6
A 15 239 44265 299.29 710 696 145.6
A 8 15 28487 190.9 710 696 145.6
B 3 64 237635 1746.28 705 688 135.7
B 11 51 110077 806.19 705 688 135.7
B 0 219 42521 308.31 705 688 135.7
C 13 61 5492 30.26 683 687 158.8
C 8 222 3072 15.02 683 687 158.8
C 9 54 2598 12.03 683 687 158.8
D 12 220 1659398 9914.65 678 658 167.3
D 2 63 133574 794.47 678 658 167.3
D 2 152 132237 786.48 678 658 167.3

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