ASTROSAT CZTI

Data Quality Report

Orbit 39137

Creation date: 2024-06-27T22:00:52.036358
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/AS1A12_044T16_9000005442_39137cztM0_level2.fits modeM0/AS1A12_044T16_9000005442_39137cztM0_level2_quad_clean.evt
Size (bytes)1,245,637,440204,598,080
Size1.2 GB 195.1 MB
Events in quadrant A6,907,2801,469,575
Events in quadrant B6,167,2151,500,816
Events in quadrant C13,098,7681,260,732
Events in quadrant D18,914,8041,049,381

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283174
B0271433
C0475703
D0653173

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13229570.430872%
B13229700.529141%
C13229165212.487716%
D13229347026.230252%

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 17616 13232 40 40 0.23% 0.30%
B 17616 13232 42 42 0.24% 0.32%
C 17616 13232 1445 1445 8.20% 10.92%
D 17616 13232 3151 3151 17.89% 23.81%

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 845061 2753.83 1514 1484 306.3
A 9 143 109717 353.32 1514 1484 306.3
A 15 223 35534 111.15 1514 1484 306.3
B 5 172 151808 520.22 1498 1454 289.0
B 4 81 51799 174.19 1498 1454 289.0
B 12 111 37647 125.23 1498 1454 289.0
C 9 187 6992144 21019.3 1422 1430 332.6
C 15 214 522073 1565.44 1422 1430 332.6
C 0 239 16437 45.12 1422 1430 332.6
D 12 235 13158956 39796.82 1361 1324 330.6
D 2 249 291156 876.63 1361 1324 330.6
D 5 222 191331 574.7 1361 1324 330.6

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