ASTROSAT CZTI

Data Quality Report

Orbit 19304

Creation date: 2024-06-27T18:01:10.453689
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_204T01_9000002856_19304cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19304cztM0_level2_quad_clean.evt
Size (bytes)511,418,88080,510,400
Size487.7 MB 76.8 MB
Events in quadrant A3,550,575505,472
Events in quadrant B3,342,682509,781
Events in quadrant C3,336,139485,085
Events in quadrant D4,801,212467,431

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149362
B0140663
C0140642
D0186322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67471051.556247%
B67471081.600711%
C67471131.674818%
D67474316.388024%

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 8612 6747 3 3 0.03% 0.04%
B 8612 6747 0 0 0.00% 0.00%
C 8612 6747 2 2 0.02% 0.03%
D 8612 6747 295 295 3.43% 4.37%

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 4 2 246269 1431.87 853 835 171.4
A 11 29 15351 84.69 853 835 171.4
A 0 226 7359 38.06 853 835 171.4
B 0 229 21486 127.64 843 820 161.9
B 12 111 19984 118.36 843 820 161.9
B 11 111 17958 105.85 843 820 161.9
C 14 238 126452 666.41 809 812 188.5
C 3 247 19656 99.95 809 812 188.5
C 8 128 15571 78.28 809 812 188.5
D 11 176 701180 3577.67 807 782 195.8
D 7 238 679234 3465.57 807 782 195.8
D 1 52 150685 765.71 807 782 195.8

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