ASTROSAT CZTI

Data Quality Report

Orbit 29237

Creation date: 2024-06-27T20:01:49.431726
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_272T01_9000004204_29237cztM0_level2.evt modeM0/AS1T03_272T01_9000004204_29237cztM0_level2_quad_clean.evt
Size (bytes)1,041,690,240180,610,560
Size993.4 MB 172.2 MB
Events in quadrant A6,134,9911,182,910
Events in quadrant B6,553,6141,198,629
Events in quadrant C7,854,7271,143,583
Events in quadrant D10,137,7101,058,532

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262113
B0275993
C0318593
D0385163

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12819570.444652%
B128191010.787893%
C128192431.895624%
D12819142111.085108%

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 14739 12821 0 0 0.00% 0.00%
B 14739 12821 9 9 0.06% 0.07%
C 14739 12821 9 9 0.06% 0.07%
D 14739 12819 702 702 4.76% 5.48%

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 0 13 76426 240.86 1569 1535 310.9
A 13 254 24022 72.32 1569 1535 310.9
A 3 137 14852 42.83 1569 1535 310.9
B 0 229 203490 686.57 1550 1509 294.2
B 0 183 185026 623.81 1550 1509 294.2
B 12 111 36070 117.48 1550 1509 294.2
C 3 233 1613230 4576.9 1513 1527 352.1
C 14 238 245002 691.42 1513 1527 352.1
C 10 22 54625 150.79 1513 1527 352.1
D 1 52 3449251 10216.21 1431 1397 337.5
D 8 195 449958 1329.11 1431 1397 337.5
D 13 153 380707 1123.92 1431 1397 337.5

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