ASTROSAT CZTI

Data Quality Report

Orbit 17395

Creation date: 2024-06-27T17:35:57.998933
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/AS1T03_030T01_9000002574_17395cztM0_level2.evt modeM0/AS1T03_030T01_9000002574_17395cztM0_level2_quad_clean.evt
Size (bytes)580,360,32082,226,880
Size553.5 MB 78.4 MB
Events in quadrant A3,242,393532,404
Events in quadrant B3,292,730537,712
Events in quadrant C3,432,309510,362
Events in quadrant D7,170,352457,585

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136912
B0138642
C0140632
D0257372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6476681.050031%
B6476781.204447%
C6476861.327980%
D6476106416.429895%

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 7596 6476 0 0 0.00% 0.00%
B 7596 6476 0 0 0.00% 0.00%
C 7596 6477 1 1 0.01% 0.02%
D 7596 6477 971 971 12.78% 14.99%

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 0 226 7336 38.38 842 827 169.6
A 0 13 6839 35.45 842 827 169.6
A 12 194 6053 30.81 842 827 169.6
B 12 111 18738 112.26 835 815 159.7
B 11 111 16714 99.58 835 815 159.7
B 14 111 14206 83.87 835 815 159.7
C 14 238 122383 662.79 791 794 183.5
C 14 128 98702 533.7 791 794 183.5
C 3 233 74630 402.49 791 794 183.5
D 1 52 2249002 11898.49 774 751 189.0
D 11 176 1329383 7031.56 774 751 189.0
D 13 232 516390 2728.93 774 751 189.0

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