ASTROSAT CZTI

Data Quality Report

Orbit 06643

Creation date: 2024-06-27T15:09:47.300236
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/AS1A02_189T01_9000000902_06643cztM0_level2.evt modeM0/AS1A02_189T01_9000000902_06643cztM0_level2_quad_clean.evt
Size (bytes)499,864,320106,824,960
Size476.7 MB 101.9 MB
Events in quadrant A3,164,707711,359
Events in quadrant B3,648,209722,819
Events in quadrant C2,779,517724,925
Events in quadrant D5,131,677649,863

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133503
B0150222
C0125942
D0195072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6104530.868283%
B61043275.357143%
C6104500.819135%
D61045589.141547%

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 7404 6105 0 0 0.00% 0.00%
B 7404 6104 161 161 2.17% 2.64%
C 7404 6104 0 0 0.00% 0.00%
D 7404 6104 428 428 5.78% 7.01%

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 15 327349 2258.37 721 707 144.6
A 14 111 40742 276.8 721 707 144.6
A 13 248 8631 54.79 721 707 144.6
B 0 228 700984 5211.7 723 706 134.4
B 4 170 35621 259.85 723 706 134.4
B 4 48 31503 229.2 723 706 134.4
C 13 61 5700 30.66 712 714 162.6
C 7 159 2029 8.09 712 714 162.6
C 3 202 1875 7.14 712 714 162.6
D 2 33 1349941 8245.1 676 655 163.6
D 2 152 541188 3303.04 676 655 163.6
D 8 195 359576 2193.26 676 655 163.6

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