ASTROSAT CZTI

Data Quality Report

Orbit 11970

Creation date: 2024-06-27T16:20:39.230351
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/AS1A04_164T01_9000001770_11970cztM0_level2.evt modeM0/AS1A04_164T01_9000001770_11970cztM0_level2_quad_clean.evt
Size (bytes)470,554,56087,857,280
Size448.8 MB 83.8 MB
Events in quadrant A3,183,798570,034
Events in quadrant B3,946,246569,293
Events in quadrant C2,882,440563,136
Events in quadrant D3,819,883527,897

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135383
B0157912
C0127122
D0153522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6160741.201299%
B61602674.334416%
C6160310.503247%
D61601692.743506%

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 7441 6161 5 5 0.07% 0.08%
B 7441 6161 130 130 1.75% 2.11%
C 7441 6162 0 0 0.00% 0.00%
D 7441 6162 114 114 1.53% 1.85%

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 1 162 92450 594.79 763 750 154.2
A 1 178 47030 300.19 763 750 154.2
A 1 161 41439 263.92 763 750 154.2
B 4 239 723691 5033.27 760 743 143.6
B 15 204 90253 623.18 760 743 143.6
B 11 51 64219 441.93 760 743 143.6
C 13 61 5408 27.36 738 742 170.5
C 14 234 3224 14.55 738 742 170.5
C 0 207 2197 8.53 738 742 170.5
D 1 52 639366 3670.33 721 700 174.0
D 8 195 163092 933.25 721 700 174.0
D 10 199 74539 424.34 721 700 174.0

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