ASTROSAT CZTI

Data Quality Report

Orbit 20305

Creation date: 2024-06-27T18:13:39.832902
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_174T01_9000003008_20305cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20305cztM0_level2_quad_clean.evt
Size (bytes)199,039,68033,338,880
Size189.8 MB 31.8 MB
Events in quadrant A1,328,209207,574
Events in quadrant B1,491,758216,335
Events in quadrant C1,341,537209,670
Events in quadrant D1,696,705198,186

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053631
B059971
C054721
D065151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2465190.770791%
B2466702.838605%
C2466391.581509%
D24661325.352798%

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 3640 2466 1 1 0.03% 0.04%
B 3641 2467 11 11 0.30% 0.45%
C 3641 2467 0 0 0.00% 0.00%
D 3641 2467 82 82 2.25% 3.32%

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 12 96 15308 216.44 337 331 69.2
A 11 29 6019 82.2 337 331 69.2
A 8 205 4472 59.84 337 331 69.2
B 7 220 120226 1843.81 337 330 65.0
B 2 9 14013 210.42 337 330 65.0
B 3 64 8936 132.35 337 330 65.0
C 14 238 52039 658.09 329 331 78.6
C 3 233 2915 32.88 329 331 78.6
C 13 61 2296 25.0 329 331 78.6
D 1 52 436257 5341.1 327 318 81.6
D 2 184 12146 144.92 327 318 81.6
D 2 234 11558 137.71 327 318 81.6

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