ASTROSAT CZTI

Data Quality Report

Orbit 17967

Creation date: 2024-06-27T17:43:16.412839
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_019T01_9000002672_17967cztM0_level2.evt modeM0/AS1A05_019T01_9000002672_17967cztM0_level2_quad_clean.evt
Size (bytes)559,509,120110,712,960
Size533.6 MB 105.6 MB
Events in quadrant A4,005,224706,798
Events in quadrant B4,194,512708,957
Events in quadrant C4,020,077683,556
Events in quadrant D4,163,829679,323

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173602
B0178982
C0173052
D0180833

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8270760.918984%
B82711541.861927%
C82711111.342038%
D8270620.749698%

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 9230 8272 0 0 0.00% 0.00%
B 9231 8273 8 8 0.09% 0.10%
C 9231 8273 0 0 0.00% 0.00%
D 9230 8272 26 26 0.28% 0.31%

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 14 237 109477 529.88 1004 982 204.8
A 15 174 32200 152.47 1004 982 204.8
A 0 226 8724 37.81 1004 982 204.8
B 7 220 80519 406.26 1004 973 195.8
B 0 197 51134 256.18 1004 973 195.8
B 4 80 27451 135.23 1004 973 195.8
C 14 238 147624 640.69 970 975 228.9
C 3 233 84734 365.93 970 975 228.9
C 13 61 6951 26.11 970 975 228.9
D 5 222 154775 631.37 985 954 243.6
D 12 233 84363 342.36 985 954 243.6
D 7 38 63178 255.4 985 954 243.6

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