ASTROSAT CZTI

Data Quality Report

Orbit 24894

Creation date: 2024-06-27T19:11:07.603706
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/AS1A08_003T09_9000003644_24894cztM0_level2.evt modeM0/AS1A08_003T09_9000003644_24894cztM0_level2_quad_clean.evt
Size (bytes)86,569,92025,776,000
Size82.6 MB 24.6 MB
Events in quadrant A592,557176,970
Events in quadrant B610,773183,081
Events in quadrant C636,471170,104
Events in quadrant D701,933163,826

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024331
B024831
C025721
D028261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113620.176056%
B113640.352113%
C1136211.848592%
D113680.704225%

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 1136 1136 0 0 0.00% 0.00%
B 1136 1136 0 0 0.00% 0.00%
C 1136 1136 0 0 0.00% 0.00%
D 1136 1136 2 2 0.18% 0.18%

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 13 254 1776 50.37 153 150 32.3
A 3 137 1332 36.62 153 150 32.3
A 0 226 1326 36.43 153 150 32.3
B 12 111 3391 104.56 154 150 31.0
B 0 190 3259 100.3 154 150 31.0
B 11 111 3038 93.17 154 150 31.0
C 14 238 23898 645.3 150 150 36.8
C 2 16 18624 501.99 150 150 36.8
C 5 112 5765 152.58 150 150 36.8
D 7 238 60208 1591.33 149 144 37.7
D 1 52 52702 1392.47 149 144 37.7
D 8 195 15460 405.78 149 144 37.7

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