ASTROSAT CZTI

Data Quality Report

Orbit 36848

Creation date: 2024-06-27T21:32:19.541047
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/AS1A11_075T01_9000005244_36848cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36848cztM0_level2_quad_clean.evt
Size (bytes)662,904,00093,692,160
Size632.2 MB 89.4 MB
Events in quadrant A5,322,762705,805
Events in quadrant B1,643,12811,968
Events in quadrant C5,986,128700,587
Events in quadrant D6,388,408675,452

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223644
B0108973
C0242373
D0262103

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10690220.205800%
B1069010690100.000000%
C106901541.440599%
D106902692.516370%

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 13526 10692 2 2 0.01% 0.02%
B 13525 10689 0 0 0.00% 0.00%
C 13526 10692 111 111 0.82% 1.04%
D 13526 10692 228 228 1.69% 2.13%

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 10 83 415940 1688.71 1216 1195 245.6
A 7 192 105210 423.52 1216 1195 245.6
A 15 174 44576 176.63 1216 1195 245.6
B 12 243 1479799 209301.24 25 24 7.1
B 12 144 28399 4013.4 25 24 7.1
B 0 213 10143 1431.24 25 24 7.1
C 14 254 652801 2392.63 1175 1183 272.3
C 15 214 460775 1687.54 1175 1183 272.3
C 0 10 273166 998.68 1175 1183 272.3
D 13 171 454489 1590.98 1176 1146 284.9
D 1 52 316787 1107.72 1176 1146 284.9
D 12 233 312357 1092.17 1176 1146 284.9

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