ASTROSAT CZTI

Data Quality Report

Orbit 25406

Creation date: 2024-06-27T19:17:17.517695
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/AS1A09_057T04_9000003712_25406cztM0_level2.evt modeM0/AS1A09_057T04_9000003712_25406cztM0_level2_quad_clean.evt
Size (bytes)541,823,04077,544,000
Size516.7 MB 74.0 MB
Events in quadrant A3,466,736489,395
Events in quadrant B3,531,652488,746
Events in quadrant C3,434,032463,595
Events in quadrant D5,513,674430,200

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142440
B0144160
C0142150
D0209530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6832841.229508%
B68321031.507611%
C68321001.463700%
D68324146.059719%

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 7647 6833 0 0 0.00% 0.00%
B 7647 6832 1 1 0.01% 0.01%
C 7647 6833 0 0 0.00% 0.00%
D 7647 6832 329 329 4.30% 4.82%

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 37494 206.69 886 869 177.2
A 15 173 10995 57.14 886 869 177.2
A 13 254 9750 50.12 886 869 177.2
B 3 112 46942 278.2 870 850 165.7
B 0 229 39206 231.5 870 850 165.7
B 0 190 30270 177.57 870 850 165.7
C 14 238 135135 687.47 839 846 195.3
C 7 247 23477 115.86 839 846 195.3
C 13 61 5861 25.67 839 846 195.3
D 7 238 1211814 6081.56 830 807 199.1
D 1 52 506276 2538.42 830 807 199.1
D 8 195 293092 1467.83 830 807 199.1

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