ASTROSAT CZTI

Data Quality Report

Orbit 04458

Creation date: 2024-06-27T14:42:19.062005
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/AS1G05_253T01_9000000560_04458cztM0_level2.evt modeM0/AS1G05_253T01_9000000560_04458cztM0_level2_quad_clean.evt
Size (bytes)433,955,52053,916,480
Size413.9 MB 51.4 MB
Events in quadrant A2,896,772308,896
Events in quadrant B2,923,164313,458
Events in quadrant C2,848,069318,799
Events in quadrant D4,070,732276,163

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124542
B0123311
C0123301
D0161281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5937901.515917%
B5937821.381169%
C5937560.943237%
D59374727.950143%

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 7187 5938 13 13 0.18% 0.22%
B 7187 5938 0 0 0.00% 0.00%
C 7187 5938 0 0 0.00% 0.00%
D 7187 5938 359 359 5.00% 6.05%

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 0 118 59770 405.51 719 703 145.7
A 0 13 40093 270.42 719 703 145.7
A 0 226 12543 81.28 719 703 145.7
B 15 204 55320 398.64 729 713 137.0
B 4 48 16990 118.82 729 713 137.0
B 15 54 12989 89.62 729 713 137.0
C 9 16 40160 241.47 709 714 163.4
C 9 54 16166 94.59 709 714 163.4
C 14 48 15385 89.81 709 714 163.4
D 2 136 1115311 6779.55 679 661 164.4
D 13 235 205958 1248.66 679 661 164.4
D 12 227 51116 306.88 679 661 164.4

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