ASTROSAT CZTI

Data Quality Report

Orbit 22843

Creation date: 2024-06-27T18:46:31.319858
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/AS1C05_001T01_9000003374_22843cztM0_level2.evt modeM0/AS1C05_001T01_9000003374_22843cztM0_level2_quad_clean.evt
Size (bytes)501,258,240135,792,000
Size478.0 MB 129.5 MB
Events in quadrant A3,405,153935,252
Events in quadrant B3,444,109941,875
Events in quadrant C3,219,331905,262
Events in quadrant D4,664,647870,910

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141990
B0141270
C0136550
D0182300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65871372.079854%
B65871522.307576%
C65881682.550091%
D65883315.024287%

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 7562 6589 0 0 0.00% 0.00%
B 7562 6589 3 3 0.04% 0.05%
C 7563 6590 0 0 0.00% 0.00%
D 7563 6590 152 152 2.01% 2.31%

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 11 47 119666 716.41 832 816 165.9
A 13 252 74461 443.92 832 816 165.9
A 13 254 12067 67.82 832 816 165.9
B 0 190 100455 654.23 823 803 152.3
B 4 21 30681 196.15 823 803 152.3
B 0 189 28808 183.86 823 803 152.3
C 14 238 129114 710.66 791 795 180.6
C 13 61 5606 26.64 791 795 180.6
C 0 10 3318 13.97 791 795 180.6
D 1 239 636243 3266.4 802 778 194.5
D 7 238 366325 1878.97 802 778 194.5
D 1 52 313334 1606.59 802 778 194.5

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