ASTROSAT CZTI

Data Quality Report

Orbit 21947

Creation date: 2024-06-27T18:34:21.792583
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/AS1A07_007T02_9000003244_21947cztM0_level2.evt modeM0/AS1A07_007T02_9000003244_21947cztM0_level2_quad_clean.evt
Size (bytes)528,831,360109,624,320
Size504.3 MB 104.5 MB
Events in quadrant A3,763,571699,296
Events in quadrant B3,984,522707,397
Events in quadrant C3,862,890690,805
Events in quadrant D3,873,251678,479

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163782
B0169132
C0164542
D0169032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7819620.792940%
B78191381.764932%
C78201401.790281%
D7820801.023018%

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 9104 7820 0 0 0.00% 0.00%
B 9104 7820 19 19 0.21% 0.24%
C 9105 7821 0 0 0.00% 0.00%
D 9105 7822 38 38 0.42% 0.49%

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 13090 62.05 974 954 195.6
A 3 137 8577 38.97 974 954 195.6
A 0 226 8236 37.23 974 954 195.6
B 3 64 137308 737.46 965 939 184.9
B 0 230 30080 157.59 965 939 184.9
B 12 111 22489 116.54 965 939 184.9
C 14 238 148601 661.38 948 953 223.2
C 9 54 10315 41.94 948 953 223.2
C 13 61 6498 24.84 948 953 223.2
D 11 176 125805 536.25 955 927 232.9
D 13 104 77785 330.04 955 927 232.9
D 1 52 44776 188.3 955 927 232.9

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