ASTROSAT CZTI

Data Quality Report

Orbit 12862

Creation date: 2024-06-27T16:33:15.815114
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/AS1A04_048T01_9000001890_12862cztM0_level2.evt modeM0/AS1A04_048T01_9000001890_12862cztM0_level2_quad_clean.evt
Size (bytes)968,477,760152,337,600
Size923.6 MB 145.3 MB
Events in quadrant A5,765,870974,236
Events in quadrant B9,213,658919,389
Events in quadrant C5,530,591983,295
Events in quadrant D7,998,827896,753

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251423
B0353412
C0246592
D0322662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12136650.535597%
B12136145011.947924%
C12136280.230719%
D121367886.493078%

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 13912 12139 25 25 0.18% 0.21%
B 13912 12139 986 986 7.09% 8.12%
C 13912 12139 4 4 0.03% 0.03%
D 13912 12139 764 764 5.49% 6.29%

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 12 189 176908 608.94 1423 1392 288.2
A 15 222 81282 277.17 1423 1392 288.2
A 9 143 23300 76.01 1423 1392 288.2
B 4 239 3568133 14146.42 1334 1298 252.1
B 0 219 161117 633.86 1334 1298 252.1
B 3 64 84381 329.52 1334 1298 252.1
C 14 234 65146 196.78 1402 1410 323.9
C 13 61 10156 27.0 1402 1410 323.9
C 3 202 3505 6.47 1402 1410 323.9
D 1 52 2266087 7041.98 1350 1314 321.6
D 10 157 514543 1595.81 1350 1314 321.6
D 2 234 41941 126.32 1350 1314 321.6

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