ASTROSAT CZTI

Data Quality Report

Orbit 39074

Creation date: 2024-06-27T22:00:05.734316
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/AS1T05_067T01_9000005432_39074cztM0_level2.fits modeM0/AS1T05_067T01_9000005432_39074cztM0_level2_quad_clean.evt
Size (bytes)405,365,76092,505,600
Size386.6 MB 88.2 MB
Events in quadrant A3,114,797631,895
Events in quadrant B2,910,948638,388
Events in quadrant C3,935,490581,037
Events in quadrant D4,606,770556,118

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128243
B0127472
C0153172
D0174402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5624170.302276%
B5624871.546942%
C56243305.867710%
D56241733.076102%

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 7146 5624 7 7 0.10% 0.12%
B 7146 5624 69 69 0.97% 1.23%
C 7146 5624 310 310 4.34% 5.51%
D 7146 5624 164 164 2.29% 2.92%

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 422931 3325.36 620 608 127.0
A 15 222 224760 1764.96 620 608 127.0
A 7 3 22855 175.17 620 608 127.0
B 5 184 434852 3638.23 615 598 119.4
B 5 172 29463 241.83 615 598 119.4
B 0 230 20670 168.16 615 598 119.4
C 15 208 1323811 9480.37 592 594 139.6
C 15 214 231383 1653.52 592 594 139.6
C 3 233 58637 415.86 592 594 139.6
D 12 235 1613619 11078.0 597 580 145.6
D 12 227 343245 2353.35 597 580 145.6
D 1 47 168838 1155.56 597 580 145.6

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