ASTROSAT CZTI

Data Quality Report

Orbit 35723

Creation date: 2022-05-10T12:59:08.578555
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/AS1A09_143T04_9000005120_35723cztM0_level2.evt modeM0/AS1A09_143T04_9000005120_35723cztM0_level2_quad_clean.evt
Size (bytes)271,635,84075,254,400
Size259.1 MB 71.8 MB
Events in quadrant A1,858,561514,178
Events in quadrant B2,006,835514,412
Events in quadrant C2,095,169497,367
Events in quadrant D2,005,066483,339

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079391
B083971
C084991
D083551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A381130.078719%
B3811421.102073%
C3811471.233272%
D3811180.472317%

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 3811 3811 0 0 0.00% 0.00%
B 3811 3811 24 24 0.63% 0.63%
C 3811 3811 44 44 1.15% 1.15%
D 3811 3811 13 13 0.34% 0.34%

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 94821 1043.9 449 441 90.4
A 13 6 10884 115.51 449 441 90.4
A 8 144 8028 83.92 449 441 90.4
B 5 172 161668 1915.51 441 430 84.2
B 5 255 50174 590.96 441 430 84.2
B 0 189 18932 219.8 441 430 84.2
C 15 214 158881 1570.73 434 436 100.9
C 0 207 118270 1168.14 434 436 100.9
C 0 10 83191 820.38 434 436 100.9
D 8 195 57028 527.07 440 428 107.4
D 2 250 40289 371.2 440 428 107.4
D 13 249 37013 340.69 440 428 107.4

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