ASTROSAT CZTI

Data Quality Report

Orbit 34709

Creation date: 2022-03-04T14:44:17.992787
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_038T36_9000004976_34709cztM0_level2.evt modeM0/AS1A09_038T36_9000004976_34709cztM0_level2_quad_clean.evt
Size (bytes)567,889,920104,316,480
Size541.6 MB 99.5 MB
Events in quadrant A6,345,977676,907
Events in quadrant B2,770,847738,272
Events in quadrant C2,821,444715,604
Events in quadrant D4,903,442658,326

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225093
B0115072
C0113672
D0182782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A528159911.342549%
B5281551.041469%
C5281500.946790%
D52812695.093732%

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 7104 5282 413 413 5.81% 7.82%
B 7104 5282 23 23 0.32% 0.44%
C 7104 5282 29 29 0.41% 0.55%
D 7104 5282 216 216 3.04% 4.09%

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 15 169 3893582 32434.76 607 595 120.0
A 10 83 46614 383.41 607 595 120.0
A 9 143 28808 235.06 607 595 120.0
B 5 172 105374 882.5 631 615 118.7
B 0 155 46760 388.73 631 615 118.7
B 5 255 27404 225.67 631 615 118.7
C 15 214 225410 1584.55 620 623 141.9
C 0 10 131087 919.66 620 623 141.9
C 15 159 20352 139.07 620 623 141.9
D 8 195 1421246 8802.78 598 586 161.4
D 12 233 320080 1979.67 598 586 161.4
D 13 249 186124 1149.64 598 586 161.4

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