ASTROSAT CZTI

Data Quality Report

Orbit 35898

Creation date: 2022-06-08T23:18:07.229084
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/AS1A11_080T01_9000005146_35898cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35898cztM0_level2_quad_clean.evt
Size (bytes)507,839,04075,761,280
Size484.3 MB 72.3 MB
Events in quadrant A3,083,355495,667
Events in quadrant B3,210,653498,298
Events in quadrant C3,055,284475,680
Events in quadrant D5,666,422447,761

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122333
B0127062
C0120292
D0205872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5378410.762365%
B5378541.004091%
C5378721.338788%
D53784318.014132%

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 7380 5379 30 30 0.41% 0.56%
B 7380 5379 28 28 0.38% 0.52%
C 7380 5379 54 54 0.73% 1.00%
D 7380 5379 375 375 5.08% 6.97%

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 163776 1143.73 716 707 142.6
A 15 169 124539 868.53 716 707 142.6
A 7 3 10580 69.25 716 707 142.6
B 5 172 213572 1619.79 696 681 131.4
B 5 255 115459 873.29 696 681 131.4
B 0 213 68688 517.43 696 681 131.4
C 15 214 228308 1477.91 670 679 154.0
C 0 10 205315 1328.63 670 679 154.0
C 0 207 8125 48.34 670 679 154.0
D 12 227 1835234 11350.4 670 655 161.6
D 8 195 352354 2175.93 670 655 161.6
D 2 250 271113 1673.3 670 655 161.6

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