ASTROSAT CZTI

Data Quality Report

Orbit 05877

Creation date: 2024-06-27T15:00:20.759324
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/AS1G06_023T01_9000000762_05877cztM0_level2.evt modeM0/AS1G06_023T01_9000000762_05877cztM0_level2_quad_clean.evt
Size (bytes)474,459,84078,304,320
Size452.5 MB 74.7 MB
Events in quadrant A2,999,301497,820
Events in quadrant B3,105,132508,646
Events in quadrant C2,845,273487,321
Events in quadrant D4,978,403424,443

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135113
B0136132
C0132122
D0194942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6487400.616618%
B6487420.647449%
C6487260.400802%
D64875939.141360%

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 7757 6488 15 15 0.19% 0.23%
B 7757 6488 1 1 0.01% 0.02%
C 7757 6488 0 0 0.00% 0.00%
D 7757 6488 456 456 5.88% 7.03%

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 15 236 111562 725.18 747 730 152.8
A 8 6 11707 71.82 747 730 152.8
A 0 226 7292 42.94 747 730 152.8
B 4 81 43089 294.6 763 747 143.7
B 0 214 42889 293.21 763 747 143.7
B 0 219 20483 137.32 763 747 143.7
C 1 16 9985 55.6 725 727 166.5
C 12 4 6177 32.73 725 727 166.5
C 13 61 5797 30.45 725 727 166.5
D 2 152 2044099 12130.35 683 663 168.5
D 2 136 265691 1573.27 683 663 168.5
D 2 14 44073 257.69 683 663 168.5

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