ASTROSAT CZTI

Data Quality Report

Orbit 25012

Creation date: 2024-06-27T19:12:43.435178
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/AS1A07_027T12_9000003664_25012cztM0_level2.evt modeM0/AS1A07_027T12_9000003664_25012cztM0_level2_quad_clean.evt
Size (bytes)394,839,36081,650,880
Size376.5 MB 77.9 MB
Events in quadrant A2,854,527530,424
Events in quadrant B2,925,186547,620
Events in quadrant C2,925,274512,901
Events in quadrant D2,877,293495,466

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120492
B0121762
C0121872
D0122012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5521290.525267%
B5521400.724506%
C5521741.340337%
D5521420.760732%

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 6851 5522 0 0 0.00% 0.00%
B 6851 5522 4 4 0.06% 0.07%
C 6851 5522 1 1 0.01% 0.02%
D 6851 5522 16 16 0.23% 0.29%

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 6 16 13819 89.81 737 725 145.8
A 13 254 7675 47.67 737 725 145.8
A 0 226 6320 38.38 737 725 145.8
B 4 173 28423 199.92 739 722 138.6
B 12 111 16219 111.84 739 722 138.6
B 11 111 14636 100.42 739 722 138.6
C 14 238 115135 689.26 711 718 166.0
C 7 247 33270 196.1 711 718 166.0
C 13 61 4925 25.34 711 718 166.0
D 8 195 76363 440.93 710 692 171.6
D 10 70 59371 341.92 710 692 171.6
D 7 238 26118 148.16 710 692 171.6

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