ASTROSAT CZTI

Data Quality Report

Orbit 37853

Creation date: 2024-06-27T21:45:19.165754
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/AS1C07_001T12_9000005352_37853cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37853cztM0_level2_quad_clean.evt
Size (bytes)430,280,64095,970,240
Size410.3 MB 91.5 MB
Events in quadrant A2,743,208670,148
Events in quadrant B2,881,718664,995
Events in quadrant C2,636,423632,275
Events in quadrant D4,434,305592,566

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110222
B0115181
C0106341
D0164591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4935240.486322%
B49351332.695035%
C4935280.567376%
D49354078.247214%

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 6968 4936 13 13 0.19% 0.26%
B 6968 4936 102 102 1.46% 2.07%
C 6968 4936 24 24 0.34% 0.49%
D 6968 4936 402 402 5.77% 8.14%

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 302949 2548.9 600 590 118.6
A 9 143 87645 733.87 600 590 118.6
A 13 6 12964 104.31 600 590 118.6
B 5 172 465743 4241.5 581 569 109.7
B 0 213 41946 377.28 581 569 109.7
B 0 155 32531 291.43 581 569 109.7
C 15 214 209700 1614.14 563 566 129.6
C 0 10 119475 917.76 563 566 129.6
C 1 23 75028 574.71 563 566 129.6
D 2 249 968439 7216.42 561 546 134.1
D 12 233 460880 3432.16 561 546 134.1
D 1 52 460146 3426.69 561 546 134.1

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