ASTROSAT CZTI

Data Quality Report

Orbit 18724

Creation date: 2024-06-27T17:54:11.446052
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/AS1A05_226T06_9000002800_18724cztM0_level2.evt modeM0/AS1A05_226T06_9000002800_18724cztM0_level2_quad_clean.evt
Size (bytes)372,205,44060,258,240
Size355.0 MB 57.5 MB
Events in quadrant A2,438,228375,251
Events in quadrant B3,269,866375,282
Events in quadrant C2,759,808353,958
Events in quadrant D2,450,465355,915

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105301
B0130381
C0114231
D0108911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5194250.481325%
B51941653.176742%
C51941492.868695%
D5194400.770119%

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 6044 5195 0 0 0.00% 0.00%
B 6044 5195 88 88 1.46% 1.69%
C 6044 5195 68 68 1.13% 1.31%
D 6044 5195 36 36 0.60% 0.69%

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 13 254 8026 57.44 630 616 129.0
A 11 29 5893 40.91 630 616 129.0
A 0 226 5372 36.87 630 616 129.0
B 10 245 818801 6782.71 620 603 120.6
B 12 111 14852 118.12 620 603 120.6
B 11 111 12813 101.22 620 603 120.6
C 3 233 328859 2330.12 596 598 140.9
C 14 238 99479 701.9 596 598 140.9
C 14 239 8272 54.47 596 598 140.9
D 10 70 86768 582.6 606 588 147.9
D 14 34 31903 211.7 606 588 147.9
D 7 238 26686 176.43 606 588 147.9

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