ASTROSAT CZTI

Data Quality Report

Orbit 31383

Creation date: 2024-06-27T20:27:33.173097
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/AS1A10_064T05_9000004548_31383cztM0_level2.evt modeM0/AS1A10_064T05_9000004548_31383cztM0_level2_quad_clean.evt
Size (bytes)1,903,432,320265,907,520
Size1.8 GB 253.6 MB
Events in quadrant A10,569,1221,745,220
Events in quadrant B16,307,5291,738,234
Events in quadrant C17,725,5551,530,288
Events in quadrant D11,680,7501,644,316

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0429294
B0626015
C0653994
D0479944

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04120
B04120
C04120
D04120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A202592071.021768%
B202584822.379307%
C20258314015.500049%
D202581420.700958%

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 25484 20263 1 1 0.00% 0.00%
B 25483 20261 32 32 0.13% 0.16%
C 25483 20260 1742 1742 6.84% 8.60%
D 25483 20262 35 35 0.14% 0.17%

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 36157 62.23 2738 2696 537.7
A 3 137 25754 42.88 2738 2696 537.7
A 0 226 23446 38.59 2738 2696 537.7
B 6 159 5265602 10617.75 2667 2609 495.7
B 0 190 252984 505.12 2667 2609 495.7
B 4 80 238531 475.96 2667 2609 495.7
C 3 233 7345383 13187.05 2422 2441 556.8
C 14 238 459821 821.4 2422 2441 556.8
C 0 10 243141 432.27 2422 2441 556.8
D 8 195 1651094 2424.38 2590 2551 680.0
D 2 250 90707 129.64 2590 2551 680.0
D 2 234 81666 116.35 2590 2551 680.0

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