ASTROSAT CZTI

Data Quality Report

Orbit 23949

Creation date: 2024-06-27T19:00:23.221233
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/AS1A07_101T02_9000003544_23949cztM0_level2.evt modeM0/AS1A07_101T02_9000003544_23949cztM0_level2_quad_clean.evt
Size (bytes)1,060,917,120177,955,200
Size1011.8 MB 169.7 MB
Events in quadrant A6,371,8661,126,983
Events in quadrant B6,519,5291,153,620
Events in quadrant C6,428,3951,118,216
Events in quadrant D11,890,9651,051,159

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280304
B0282203
C0281453
D0448223

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135911050.772570%
B135921721.265450%
C135922151.581813%
D13592139310.248676%

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 15211 13594 0 0 0.00% 0.00%
B 15212 13595 2 2 0.01% 0.01%
C 15212 13595 0 0 0.00% 0.00%
D 15212 13595 785 785 5.16% 5.77%

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 14 111 36720 106.81 1642 1607 328.8
A 13 254 21675 61.04 1642 1607 328.8
A 3 137 15127 41.13 1642 1607 328.8
B 0 189 55855 173.38 1637 1595 313.0
B 12 111 39447 120.95 1637 1595 313.0
B 11 111 35114 107.11 1637 1595 313.0
C 14 238 248583 669.17 1577 1587 369.1
C 0 10 21955 55.18 1577 1587 369.1
C 3 233 11071 25.69 1577 1587 369.1
D 1 52 2574341 6933.87 1526 1484 371.1
D 12 218 2276321 6130.71 1526 1484 371.1
D 8 195 781116 2101.12 1526 1484 371.1

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