ASTROSAT CZTI

Data Quality Report

Orbit 00809

Creation date: 2024-06-27T14:03:14.338366
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/AS1P01_010T01_9000000112_00809cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00809cztM0_level2_quad_clean.evt
Size (bytes)851,031,36088,896,960
Size811.6 MB 84.8 MB
Events in quadrant A6,364,543589,376
Events in quadrant B6,731,588593,354
Events in quadrant C6,199,399567,599
Events in quadrant D6,106,459551,237

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229030
B0239510
C0224150
D0221330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A558380.143292%
B5582140.250806%
C558280.143318%
D5582581.039054%

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 6838 5584 140 140 2.05% 2.51%
B 6837 5583 166 166 2.43% 2.97%
C 6837 5583 124 124 1.81% 2.22%
D 6837 5583 184 184 2.69% 3.30%

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 0 214 15167 33.95 1652 1662 397.8
A 15 233 9520 19.75 1652 1662 397.8
A 11 79 6526 12.23 1652 1662 397.8
B 0 23 32242 75.22 1744 1750 405.4
B 0 220 19114 42.83 1744 1750 405.4
B 4 185 15283 33.38 1744 1750 405.4
C 15 241 30617 67.43 1553 1605 430.3
C 9 52 27701 60.65 1553 1605 430.3
C 3 111 26193 57.15 1553 1605 430.3
D 13 58 224245 486.22 1483 1536 458.0
D 13 25 155337 335.78 1483 1536 458.0
D 13 170 52281 110.79 1483 1536 458.0

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