ASTROSAT CZTI

Data Quality Report

Orbit 38344

Creation date: 2024-06-27T21:51:29.488646
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_094T24_9000005374_38344cztM0_level2.fits modeM0/AS1A10_094T24_9000005374_38344cztM0_level2_quad_clean.evt
Size (bytes)406,869,12084,833,280
Size388.0 MB 80.9 MB
Events in quadrant A2,812,734614,350
Events in quadrant B2,763,119629,742
Events in quadrant C2,458,029604,528
Events in quadrant D6,639,861371,610

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113012
B0114401
C0103581
D0231291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4970521.046278%
B4970430.865191%
C497060.120724%
D4970168033.802817%

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 6883 4971 41 41 0.60% 0.82%
B 6883 4971 27 27 0.39% 0.54%
C 6883 4971 2 2 0.03% 0.04%
D 6883 4971 1567 1567 22.77% 31.52%

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 10 83 343839 2987.37 577 565 114.9
A 13 248 172780 1498.71 577 565 114.9
A 12 189 44227 379.97 577 565 114.9
B 0 186 103363 952.78 575 561 107.9
B 0 183 100653 927.66 575 561 107.9
B 0 155 79849 734.85 575 561 107.9
C 15 214 210601 1640.43 557 560 128.0
C 14 254 48205 372.11 557 560 128.0
C 0 10 9572 70.38 557 560 128.0
D 10 203 3894004 32557.31 488 473 119.6
D 12 227 242963 2027.68 488 473 119.6
D 2 16 200627 1673.67 488 473 119.6

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