ASTROSAT CZTI

Data Quality Report

Orbit 06145

Creation date: 2024-06-27T15:03:20.258682
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/AS1C02_018T01_9000000798_06145cztM0_level2.evt modeM0/AS1C02_018T01_9000000798_06145cztM0_level2_quad_clean.evt
Size (bytes)997,525,440170,596,800
Size951.3 MB 162.7 MB
Events in quadrant A7,541,3651,016,643
Events in quadrant B8,486,8011,048,127
Events in quadrant C6,547,2241,071,615
Events in quadrant D6,653,6671,032,054

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161
B0161
C0161
D0161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037597
B037490
C037680
D037466

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0407918682
B04569111330
C0376688028
D0387008426

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144673062.115159%
B141367745.475382%
C145491581.085985%
D145362051.410292%

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 20113 16447 56 56 0.28% 0.34%
B 20112 16226 342 342 1.70% 2.11%
C 20112 16573 0 0 0.00% 0.00%
D 20113 16562 32 32 0.16% 0.19%

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 8 15 909345 2629.6 1681 1641 345.2
A 0 50 69921 197.8 1681 1641 345.2
A 0 254 43276 120.61 1681 1641 345.2
B 3 64 1690234 5421.99 1623 1582 311.4
B 0 219 284228 907.53 1623 1582 311.4
B 0 214 70468 221.18 1623 1582 311.4
C 8 128 21495 51.32 1660 1671 386.3
C 9 16 16902 39.43 1660 1671 386.3
C 13 61 13158 29.73 1660 1671 386.3
D 13 169 180262 438.38 1656 1601 407.6
D 5 97 79715 191.67 1656 1601 407.6
D 8 195 67150 160.84 1656 1601 407.6

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