ASTROSAT CZTI

Data Quality Report

Orbit 20190729_A06_002T02_9000003064_level2

Creation date: 2025-12-02T19:12:49.550010
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/AS1A06_002T02_9000003064cztM0_level2.fits modeM0/AS1A06_002T02_9000003064cztM0_level2_quad_clean.evt
Size (bytes)178,015,680163,252,800
Size169.8 MB 155.7 MB
Events in quadrant A1,086,828966,243
Events in quadrant B1,041,274961,522
Events in quadrant C1,052,952888,757
Events in quadrant D912,042828,797

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387040
B0393180
C0388680
D0471690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188381230.652936%
B188352081.104327%
C188362451.300701%
D188354632.458190%

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 29878 18840 0 0 0.00% 0.00%
B 29878 18839 0 0 0.00% 0.00%
C 29878 18841 0 0 0.00% 0.00%
D 29878 18837 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 0 29 1085 11.37 282 266 72.1
A 9 19 854 8.16 282 266 72.1
A 0 30 852 8.13 282 266 72.1
B 2 9 813 9.69 274 261 57.0
B 3 17 705 7.8 274 261 57.0
B 14 254 690 7.53 274 261 57.0
C 1 81 824 7.83 276 258 72.3
C 1 80 796 7.44 276 258 72.3
C 12 241 766 7.03 276 258 72.3
D 7 3 669 6.12 259 236 70.8
D 15 46 665 6.06 259 236 70.8
D 6 38 660 5.99 259 236 70.8

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