ASTROSAT CZTI

Data Quality Report

Orbit 20829

Creation date: 2024-06-27T18:20:02.809884
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/AS1A05_013T01_9000003070_20829cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20829cztM0_level2_quad_clean.evt
Size (bytes)498,695,040118,039,680
Size475.6 MB 112.6 MB
Events in quadrant A3,296,061816,461
Events in quadrant B3,613,847808,471
Events in quadrant C3,318,308786,521
Events in quadrant D4,464,623741,428

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135791
B0145741
C0137461
D0174361

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6049811.339064%
B60481372.265212%
C60481392.298280%
D60483976.564153%

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 7384 6049 0 0 0.00% 0.00%
B 7383 6048 21 21 0.28% 0.35%
C 7383 6048 0 0 0.00% 0.00%
D 7382 6047 329 329 4.46% 5.44%

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 7640 40.12 858 845 169.3
A 3 137 6182 31.51 858 845 169.3
A 12 194 6170 31.44 858 845 169.3
B 7 220 185692 1199.7 834 817 154.1
B 0 219 60892 389.84 834 817 154.1
B 0 189 40573 257.99 834 817 154.1
C 14 238 131690 709.88 813 821 184.4
C 3 233 11017 55.31 813 821 184.4
C 13 61 5749 26.73 813 821 184.4
D 1 52 684071 3558.6 811 790 192.0
D 1 20 265783 1380.11 811 790 192.0
D 1 239 239651 1244.01 811 790 192.0

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