ASTROSAT CZTI

Data Quality Report

Orbit 16969

Creation date: 2024-06-27T17:30:12.325795
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/AS1A05_188T01_9000002520_16969cztM0_level2.evt modeM0/AS1A05_188T01_9000002520_16969cztM0_level2_quad_clean.evt
Size (bytes)689,783,04072,440,640
Size657.8 MB 69.1 MB
Events in quadrant A3,244,606475,971
Events in quadrant B4,373,585477,082
Events in quadrant C3,700,714462,804
Events in quadrant D9,091,587284,138

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145051
B0175344
C0155541
D0319271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70701111.570014%
B70702864.045262%
C70701462.065064%
D7070295641.810467%

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 7346 7072 0 0 0.00% 0.00%
B 7346 7072 93 93 1.27% 1.32%
C 7346 7072 0 0 0.00% 0.00%
D 7346 7071 1614 1614 21.97% 22.83%

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 12 189 10672 57.44 840 820 171.5
A 0 226 7547 39.22 840 820 171.5
A 12 194 6266 31.75 840 820 171.5
B 3 64 415308 2581.47 834 813 160.6
B 15 35 313246 1945.83 834 813 160.6
B 7 220 67782 417.08 834 813 160.6
C 3 233 410530 2137.69 809 814 191.7
C 14 238 122771 636.31 809 814 191.7
C 0 207 12456 60.74 809 814 191.7
D 1 52 6697528 47696.56 576 559 140.4
D 2 152 52065 366.83 576 559 140.4
D 10 70 44348 311.87 576 559 140.4

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