ASTROSAT CZTI

Data Quality Report

Orbit 27170

Creation date: 2024-06-27T19:37:14.650110
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/AS1T03_245T01_9000003916_27170cztM0_level2.evt modeM0/AS1T03_245T01_9000003916_27170cztM0_level2_quad_clean.evt
Size (bytes)493,830,72090,838,080
Size471.0 MB 86.6 MB
Events in quadrant A3,235,427604,112
Events in quadrant B3,649,276614,669
Events in quadrant C3,046,145582,103
Events in quadrant D4,617,484530,317

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132390
B0145860
C0126480
D0177180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6005560.932556%
B60061492.480852%
C6005831.382182%
D60053626.028310%

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 7340 6006 19 19 0.26% 0.32%
B 7341 6007 25 25 0.34% 0.42%
C 7340 6006 0 0 0.00% 0.00%
D 7340 6006 325 325 4.43% 5.41%

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 117717 735.81 792 779 158.9
A 14 235 42050 259.69 792 779 158.9
A 13 248 14939 89.1 792 779 158.9
B 15 33 391839 2632.53 790 774 148.6
B 0 190 46128 305.31 790 774 148.6
B 12 18 31513 206.93 790 774 148.6
C 14 238 121833 697.49 748 752 173.6
C 13 61 5364 26.57 748 752 173.6
C 15 208 4956 24.22 748 752 173.6
D 1 52 1300519 7155.62 726 709 181.6
D 7 38 242478 1330.97 726 709 181.6
D 12 233 146311 801.56 726 709 181.6

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