ASTROSAT CZTI

Data Quality Report

Orbit 36043

Creation date: 2022-08-10T00:09:49.317473
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/AS1T04_069T01_9000005158_36043cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36043cztM0_level2_quad_clean.evt
Size (bytes)476,582,40049,124,160
Size454.5 MB 46.8 MB
Events in quadrant A2,678,363292,245
Events in quadrant B2,952,104298,502
Events in quadrant C3,316,386289,862
Events in quadrant D5,134,831243,198

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109183
B0118722
C0128262
D0185862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5179110.212396%
B5179621.197142%
C5179991.911566%
D517996618.652249%

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 7212 5180 1 1 0.01% 0.02%
B 7212 5180 35 35 0.49% 0.68%
C 7212 5180 78 78 1.08% 1.51%
D 7212 5180 870 870 12.06% 16.80%

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 162239 1265.49 638 627 127.7
A 0 31 38627 297.56 638 627 127.7
A 13 6 9757 71.49 638 627 127.7
B 5 172 213251 1756.78 638 621 121.0
B 5 236 99259 814.96 638 621 121.0
B 0 190 42712 347.76 638 621 121.0
C 9 187 312482 2180.04 619 625 143.1
C 15 214 214933 1498.12 619 625 143.1
C 0 207 159043 1107.42 619 625 143.1
D 12 6 2678273 19471.64 556 541 137.5
D 13 249 85557 618.21 556 541 137.5
D 15 0 37435 268.28 556 541 137.5

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