ASTROSAT CZTI

Data Quality Report

Orbit 17470

Creation date: 2024-06-27T17:36:55.192560
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_196T01_9000002584_17470cztM0_level2.evt modeM0/AS1A05_196T01_9000002584_17470cztM0_level2_quad_clean.evt
Size (bytes)531,861,12054,573,120
Size507.2 MB 52.0 MB
Events in quadrant A2,749,494352,859
Events in quadrant B2,760,115355,820
Events in quadrant C2,650,882338,881
Events in quadrant D7,611,975257,343

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111711
B0112161
C0108561
D0259881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49511212.443951%
B49511092.201575%
C49511302.625732%
D4951187137.790345%

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 6261 4951 12 12 0.19% 0.24%
B 6261 4951 4 4 0.06% 0.08%
C 6261 4951 0 0 0.00% 0.00%
D 6261 4951 1640 1640 26.19% 33.12%

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 15 174 130467 951.14 675 663 136.5
A 12 96 12526 86.93 675 663 136.5
A 4 2 8234 55.48 675 663 136.5
B 0 197 54308 428.24 668 651 125.3
B 0 189 45404 357.18 668 651 125.3
B 5 172 17446 134.04 668 651 125.3
C 14 238 100984 675.14 643 649 148.6
C 5 218 21143 137.9 643 649 148.6
C 3 233 16355 105.68 643 649 148.6
D 11 176 4332897 31465.68 566 548 137.7
D 10 70 807003 5857.25 566 548 137.7
D 13 189 205740 1490.3 566 548 137.7

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