ASTROSAT CZTI

Data Quality Report

Orbit 09315

Creation date: 2024-06-27T15:44:23.561077
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/AS1G07_002T01_9000001316_09315cztM0_level2.evt modeM0/AS1G07_002T01_9000001316_09315cztM0_level2_quad_clean.evt
Size (bytes)1,354,360,320229,547,520
Size1.3 GB 218.9 MB
Events in quadrant A11,575,2801,413,525
Events in quadrant B8,987,5241,440,516
Events in quadrant C8,574,1441,426,005
Events in quadrant D10,615,4111,383,537

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0211
C0210
D0211

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0488252287
B0403131532
C0397571333
D0462691950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039610
B039622
C039616
D039612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186115282.837032%
B187084382.341244%
C187713221.715412%
D186957403.958278%

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 21514 19113 31 31 0.14% 0.16%
B 21514 19166 11 11 0.05% 0.06%
C 21514 19214 1 1 0.00% 0.01%
D 21514 19169 281 281 1.31% 1.47%

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 5 2666273 5872.19 2223 2172 453.7
A 1 162 200623 437.42 2223 2172 453.7
A 1 178 39090 81.37 2223 2172 453.7
B 10 245 112649 255.24 2241 2180 432.8
B 0 219 95967 216.69 2241 2180 432.8
B 12 111 50385 111.38 2241 2180 432.8
C 13 61 16351 27.8 2190 2193 509.2
C 8 222 13005 21.23 2190 2193 509.2
C 5 128 10430 16.17 2190 2193 509.2
D 12 227 725425 1346.72 2152 2093 537.1
D 10 172 721433 1339.28 2152 2093 537.1
D 1 52 551549 1022.99 2152 2093 537.1

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