ASTROSAT CZTI

Data Quality Report

Orbit 16711

Creation date: 2024-06-27T17:26:33.908168
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/AS1T03_024T01_9000002472_16711cztM0_level2.evt modeM0/AS1T03_024T01_9000002472_16711cztM0_level2_quad_clean.evt
Size (bytes)1,191,867,840185,106,240
Size1.1 GB 176.5 MB
Events in quadrant A6,813,9241,206,961
Events in quadrant B7,087,1411,228,543
Events in quadrant C6,890,2531,183,304
Events in quadrant D14,418,7411,079,118

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285925
B0293424
C0285694
D0522324

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131423032.305585%
B131423122.374068%
C131423052.320804%
D13142157711.999696%

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 14498 13146 56 56 0.39% 0.43%
B 14498 13146 19 19 0.13% 0.14%
C 14498 13146 24 24 0.17% 0.18%
D 14498 13146 1090 1090 7.52% 8.29%

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 15 174 516616 1568.42 1620 1590 328.4
A 9 143 56044 165.83 1620 1590 328.4
A 0 226 14229 38.49 1620 1590 328.4
B 15 35 279457 891.64 1623 1591 311.6
B 10 16 258386 824.03 1623 1591 311.6
B 5 236 70112 219.88 1623 1591 311.6
C 0 207 278305 758.38 1555 1571 364.9
C 14 238 239219 651.27 1555 1571 364.9
C 3 233 176028 478.09 1555 1571 364.9
D 2 16 4654486 12480.85 1512 1471 372.8
D 1 52 2345159 6286.51 1512 1471 372.8
D 5 222 827522 2215.73 1512 1471 372.8

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