ASTROSAT CZTI

Data Quality Report

Orbit 35588

Creation date: 2022-04-28T18:13:17.206053
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_071T01_9000005096_35588cztM0_level2.evt modeM0/AS1A10_071T01_9000005096_35588cztM0_level2_quad_clean.evt
Size (bytes)438,295,68082,229,760
Size418.0 MB 78.4 MB
Events in quadrant A2,869,039528,493
Events in quadrant B3,555,775526,890
Events in quadrant C3,014,593530,571
Events in quadrant D3,447,271505,609

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118921
B0142201
C0121791
D0138961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5698310.544051%
B56982654.650755%
C5698691.210951%
D56981001.755002%

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 6982 5699 21 21 0.30% 0.37%
B 6982 5699 173 173 2.48% 3.04%
C 6982 5699 60 60 0.86% 1.05%
D 6982 5699 80 80 1.15% 1.40%

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 15 169 198971 1473.46 662 649 134.6
A 10 83 101010 745.64 662 649 134.6
A 13 6 11836 83.12 662 649 134.6
B 5 172 947916 7453.1 652 631 127.1
B 12 111 16362 123.77 652 631 127.1
B 8 128 16156 122.15 652 631 127.1
C 15 214 229506 1502.45 648 653 152.3
C 0 10 168726 1103.42 648 653 152.3
C 9 69 80311 522.97 648 653 152.3
D 7 80 423179 2670.82 644 625 158.2
D 2 249 143271 901.62 644 625 158.2
D 1 52 137543 865.41 644 625 158.2

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