ASTROSAT CZTI

Data Quality Report

Orbit 16796

Creation date: 2024-06-27T17:27:44.086119
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/AS1A05_004T04_9000002494_16796cztM0_level2.evt modeM0/AS1A05_004T04_9000002494_16796cztM0_level2_quad_clean.evt
Size (bytes)617,621,760103,858,560
Size589.0 MB 99.0 MB
Events in quadrant A3,930,857681,186
Events in quadrant B4,299,548669,359
Events in quadrant C3,986,166664,942
Events in quadrant D5,975,912603,657

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169883
B0178572
C0168222
D0228622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7555761.005956%
B75552262.991396%
C75551311.733951%
D755589011.780278%

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 7941 7557 29 29 0.37% 0.38%
B 7941 7557 134 134 1.69% 1.77%
C 7941 7557 5 5 0.06% 0.07%
D 7941 7557 652 652 8.21% 8.63%

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 15 174 448863 2474.79 895 876 181.0
A 9 143 22583 119.91 895 876 181.0
A 10 234 16309 85.26 895 876 181.0
B 0 229 590996 3497.78 885 861 168.7
B 15 35 117315 690.23 885 861 168.7
B 0 189 64129 375.0 885 861 168.7
C 3 233 342871 1677.4 868 873 203.9
C 14 238 132609 646.13 868 873 203.9
C 0 207 86915 422.01 868 873 203.9
D 1 52 2381574 11902.7 818 794 200.0
D 12 218 177247 882.18 818 794 200.0
D 7 38 173261 862.25 818 794 200.0

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