ASTROSAT CZTI

Data Quality Report

Orbit 11851

Creation date: 2024-06-27T16:19:07.621766
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/AS1A04_088T03_9000001750_11851cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11851cztM0_level2_quad_clean.evt
Size (bytes)524,963,52099,288,000
Size500.6 MB 94.7 MB
Events in quadrant A3,571,029646,226
Events in quadrant B3,875,812645,953
Events in quadrant C3,154,290637,681
Events in quadrant D4,831,516598,610

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152333
B0162972
C0142032
D0194392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6868751.092021%
B68681392.023879%
C6868530.771695%
D68685157.498544%

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 8949 6871 1 1 0.01% 0.01%
B 8949 6871 30 30 0.34% 0.44%
C 8949 6871 0 0 0.00% 0.00%
D 8949 6871 397 397 4.44% 5.78%

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 1 162 147372 868.43 829 811 168.8
A 1 178 77253 452.95 829 811 168.8
A 1 161 66957 391.94 829 811 168.8
B 4 239 407591 2584.64 829 807 157.4
B 15 204 67373 422.95 829 807 157.4
B 10 252 59267 371.45 829 807 157.4
C 13 61 5770 26.34 808 812 188.2
C 12 4 2664 9.84 808 812 188.2
C 3 202 2036 6.5 808 812 188.2
D 13 122 1216183 6530.43 785 763 186.1
D 9 85 238437 1277.02 785 763 186.1
D 1 52 135399 723.4 785 763 186.1

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