ASTROSAT CZTI

Data Quality Report

Orbit 23146

Creation date: 2024-06-27T18:50:29.782731
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/AS1C05_002T03_9000003418_23146cztM0_level2.evt modeM0/AS1C05_002T03_9000003418_23146cztM0_level2_quad_clean.evt
Size (bytes)370,229,76092,701,440
Size353.1 MB 88.4 MB
Events in quadrant A2,494,324609,724
Events in quadrant B2,599,557633,547
Events in quadrant C2,756,561613,254
Events in quadrant D3,013,641592,381

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106751
B0108781
C0113081
D0123761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5118330.644783%
B5118470.918327%
C51181412.754982%
D5118841.641266%

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 6503 5119 0 0 0.00% 0.00%
B 6503 5119 2 2 0.03% 0.04%
C 6503 5119 47 47 0.72% 0.92%
D 6503 5119 47 47 0.72% 0.92%

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 6 16 8081 57.65 645 634 129.2
A 13 254 8057 57.46 645 634 129.2
A 3 137 5509 37.74 645 634 129.2
B 14 207 25584 204.23 652 638 122.1
B 12 111 14603 114.33 652 638 122.1
B 11 111 13045 101.57 652 638 122.1
C 0 10 164242 1113.47 628 634 146.9
C 14 238 100263 678.05 628 634 146.9
C 7 247 24922 165.3 628 634 146.9
D 1 52 367023 2371.84 632 616 154.5
D 2 136 91502 588.33 632 616 154.5
D 7 238 68524 439.58 632 616 154.5

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