ASTROSAT CZTI

Data Quality Report

Orbit 06977

Creation date: 2024-06-27T15:13:59.222302
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/AS1A02_090T02_9000000956_06977cztM0_level2.evt modeM0/AS1A02_090T02_9000000956_06977cztM0_level2_quad_clean.evt
Size (bytes)433,163,52065,289,600
Size413.1 MB 62.3 MB
Events in quadrant A3,098,841386,658
Events in quadrant B3,431,175390,522
Events in quadrant C3,030,934388,019
Events in quadrant D3,132,187374,965

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013128156
B014146194
C012989158
D013226157

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01302
B01302
C01302
D01302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6254901.439079%
B62511201.919693%
C6248590.944302%
D6252711.135637%

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 7565 6270 0 0 0.00% 0.00%
B 7562 6266 19 19 0.25% 0.30%
C 7561 6260 0 0 0.00% 0.00%
D 7559 6262 3 3 0.04% 0.05%

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 0 23 10350 59.12 799 783 161.8
A 0 226 8558 48.05 799 783 161.8
A 12 194 7492 41.46 799 783 161.8
B 0 228 292936 1942.04 793 775 150.4
B 0 214 30954 200.6 793 775 150.4
B 12 111 14668 92.35 793 775 150.4
C 13 61 6292 30.87 775 778 178.6
C 1 0 4498 20.83 775 778 178.6
C 1 16 4239 19.38 775 778 178.6
D 8 195 112940 585.76 782 758 191.5
D 2 14 26900 136.5 782 758 191.5
D 12 221 18289 91.54 782 758 191.5

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