ASTROSAT CZTI

Data Quality Report

Orbit 20240228_A13_071T02_9000006106_level2

Creation date: 2024-03-02T11:11:57.943682
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_071T02_9000006106cztM0_level2.fits modeM0/AS1A13_071T02_9000006106cztM0_level2_quad_clean.evt
Size (bytes)687,038,400701,700,480
Size655.2 MB 669.2 MB
Events in quadrant A4,063,2224,162,452
Events in quadrant B3,904,7504,139,876
Events in quadrant C4,127,0424,077,682
Events in quadrant D3,479,7363,643,381

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02444940
B01910190
C01692810
D02040780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015400
B015420
C015420
D015400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01010
B01010
C01000
D01010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7626323773.116846%
B7626744995.899013%
C7626815221.995594%
D7626937464.911563%

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 86139 76271 0 0 0.00% 0.00%
B 86139 76183 0 0 0.00% 0.00%
C 86139 76251 0 0 0.00% 0.00%
D 86139 76220 0 0 0.00% 0.00%

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 7 110 3357 8.71 1057 982 272.7
A 15 236 3287 8.45 1057 982 272.7
A 0 29 3092 7.74 1057 982 272.7
B 2 9 3695 13.23 1030 974 205.6
B 2 8 2947 9.6 1030 974 205.6
B 3 17 2863 9.19 1030 974 205.6
C 3 202 3033 7.16 1090 1013 282.0
C 1 81 3015 7.1 1090 1013 282.0
C 1 80 2968 6.93 1090 1013 282.0
D 8 176 2925 7.25 999 903 278.7
D 10 113 2499 5.73 999 903 278.7
D 10 189 2483 5.67 999 903 278.7

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