ASTROSAT CZTI

Data Quality Report

Orbit 45578

Creation date: 2024-06-27T23:13:51.507086
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/AS1A13_071T04_9000006110_45578cztM0_level2.fits modeM0/AS1A13_071T04_9000006110_45578cztM0_level2_quad_clean.evt
Size (bytes)520,908,480110,983,680
Size496.8 MB 105.8 MB
Events in quadrant A6,021,406739,575
Events in quadrant B3,453,743774,580
Events in quadrant C2,967,650740,068
Events in quadrant D6,313,513633,973

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225262
B0149082
C0138882
D0234862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67812924.306150%
B67821251.843114%
C6782290.427602%
D678268110.041286%

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 7636 6782 11 11 0.14% 0.16%
B 7637 6783 19 19 0.25% 0.28%
C 7637 6783 0 0 0.00% 0.00%
D 7637 6783 478 478 6.26% 7.05%

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 10 83 3026775 18963.18 766 749 159.6
A 0 243 26048 158.54 766 749 159.6
A 3 137 8682 49.71 766 749 159.6
B 15 201 105348 702.1 768 745 149.0
B 3 112 97126 646.91 768 745 149.0
B 5 255 68592 455.39 768 745 149.0
C 12 2 17395 93.82 753 755 177.4
C 2 14 8754 45.1 753 755 177.4
C 13 61 5235 25.26 753 755 177.4
D 1 52 1625241 8844.9 724 700 183.7
D 11 241 678366 3689.59 724 700 183.7
D 11 224 317685 1725.84 724 700 183.7

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