ASTROSAT CZTI

Data Quality Report

Orbit 23616

Creation date: 2024-06-27T18:56:50.439657
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_178T01_9000003488_23616cztM0_level2.evt modeM0/AS1T03_178T01_9000003488_23616cztM0_level2_quad_clean.evt
Size (bytes)1,008,040,320165,559,680
Size961.3 MB 157.9 MB
Events in quadrant A5,622,0121,092,089
Events in quadrant B12,127,822967,966
Events in quadrant C5,714,8851,067,033
Events in quadrant D6,235,1601,039,418

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248642
B0441662
C0250352
D0269452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12241420.343109%
B12241250820.488522%
C122421060.865872%
D12242790.645319%

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 13571 12241 0 0 0.00% 0.00%
B 13570 12240 1806 1806 13.31% 14.75%
C 13572 12242 1 1 0.01% 0.01%
D 13572 12244 73 73 0.54% 0.60%

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 13 254 18108 56.73 1459 1430 294.0
A 3 137 13583 41.33 1459 1430 294.0
A 0 226 12212 36.67 1459 1430 294.0
B 3 64 6824682 27173.49 1308 1275 251.1
B 0 229 87870 344.85 1308 1275 251.1
B 0 189 55601 216.35 1308 1275 251.1
C 14 238 221128 665.35 1402 1408 330.2
C 7 247 23630 67.29 1402 1408 330.2
C 13 61 9488 24.47 1402 1408 330.2
D 1 52 819800 2363.45 1414 1375 346.3
D 9 85 68269 193.18 1414 1375 346.3
D 2 234 49673 139.47 1414 1375 346.3

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