ASTROSAT CZTI

Data Quality Report

Orbit 04390

Creation date: 2024-06-27T14:41:22.218532
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/AS1G05_230T02_9000000548_04390cztM0_level2.evt modeM0/AS1G05_230T02_9000000548_04390cztM0_level2_quad_clean.evt
Size (bytes)499,291,20081,417,600
Size476.2 MB 77.6 MB
Events in quadrant A3,340,593495,030
Events in quadrant B3,406,924490,202
Events in quadrant C3,274,501490,337
Events in quadrant D4,597,849476,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153292
B0153771
C0152461
D0189851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73821331.801680%
B73821001.354646%
C7382380.514766%
D73822152.912490%

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 7617 7384 24 24 0.32% 0.33%
B 7617 7384 1 1 0.01% 0.01%
C 7617 7384 0 0 0.00% 0.00%
D 7617 7384 127 127 1.67% 1.72%

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 13 248 62820 361.88 834 812 171.3
A 13 251 28190 159.78 834 812 171.3
A 13 14 12713 69.45 834 812 171.3
B 14 167 92751 570.24 839 817 161.2
B 15 204 38948 236.52 839 817 161.2
B 15 54 18641 110.56 839 817 161.2
C 9 16 62828 328.92 807 809 188.6
C 14 48 41462 215.61 807 809 188.6
C 9 247 16016 80.65 807 809 188.6
D 2 63 635768 3288.86 801 777 193.1
D 2 37 479652 2480.27 801 777 193.1
D 9 35 169694 874.88 801 777 193.1

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