ASTROSAT CZTI

Data Quality Report

Orbit 34289

Creation date: 2022-01-30T22:17:36.344850
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_086T01_9000004890_34289cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34289cztM0_level2_quad_clean.evt
Size (bytes)521,294,40071,354,880
Size497.1 MB 68.0 MB
Events in quadrant A2,573,508460,740
Events in quadrant B3,582,640458,123
Events in quadrant C3,124,233447,248
Events in quadrant D6,141,221416,230

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111602
B0140681
C0124071
D0220811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5399150.277829%
B53992033.759956%
C53991502.778292%
D539955810.335247%

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 7191 5400 4 4 0.06% 0.07%
B 7191 5400 154 154 2.14% 2.85%
C 7191 5400 95 95 1.32% 1.76%
D 7191 5400 538 538 7.48% 9.96%

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 9 143 62261 484.48 633 621 127.2
A 15 223 30560 235.32 633 621 127.2
A 10 83 18905 143.71 633 621 127.2
B 5 172 556744 4716.04 628 612 117.9
B 0 229 224588 1899.33 628 612 117.9
B 4 251 205595 1738.27 628 612 117.9
C 14 254 406983 2884.79 616 621 140.9
C 15 214 228515 1617.83 616 621 140.9
C 0 10 50834 356.47 616 621 140.9
D 8 195 1436642 9615.58 607 591 149.3
D 12 235 1072158 7175.05 607 591 149.3
D 7 223 974401 6520.48 607 591 149.3

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