ASTROSAT CZTI

Data Quality Report

Orbit 11246

Creation date: 2024-06-27T16:10:15.571031
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/AS1T01_202T01_9000001640_11246cztM0_level2.evt modeM0/AS1T01_202T01_9000001640_11246cztM0_level2_quad_clean.evt
Size (bytes)467,377,920101,433,600
Size445.7 MB 96.7 MB
Events in quadrant A3,716,487674,508
Events in quadrant B3,151,052690,224
Events in quadrant C2,664,955703,283
Events in quadrant D4,254,431624,687

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145652
B0127731
C0113001
D0163191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54201663.062731%
B54201542.841328%
C5420120.221402%
D54202204.059041%

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 6715 5421 62 62 0.92% 1.14%
B 6715 5421 53 53 0.79% 0.98%
C 6715 5421 0 0 0.00% 0.00%
D 6715 5421 193 193 2.87% 3.56%

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 15 174 755741 4958.07 680 665 152.3
A 14 238 255317 1672.13 680 665 152.3
A 8 15 49824 322.79 680 665 152.3
B 4 239 275102 2020.84 688 675 135.8
B 11 51 52435 381.15 688 675 135.8
B 10 114 45094 327.09 688 675 135.8
C 5 239 10711 62.07 680 690 161.4
C 13 61 4979 26.57 680 690 161.4
C 12 4 2790 13.01 680 690 161.4
D 8 195 509585 3067.34 648 630 165.9
D 13 104 383136 2305.26 648 630 165.9
D 12 157 283900 1707.19 648 630 165.9

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