ASTROSAT CZTI

Data Quality Report

Orbit 51933

Creation date: 2025-05-05T10:11:56.328025
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/AS1C09_011T05_9000006466_51933cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51933cztM0_level2_quad_clean.evt
Size (bytes)838,609,92059,322,240
Size799.8 MB 56.6 MB
Events in quadrant A4,912,937449,622
Events in quadrant B6,190,763454,391
Events in quadrant C7,973,251346,788
Events in quadrant D11,552,881170,828

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01102
B01091
C01080
D01091

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01846876
B02214528
C02749184
D038186178

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A534659111.054994%
B5351113921.285741%
C5345184434.499532%
D5342361267.615125%

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 6151 5349 491 491 7.98% 9.18%
B 6151 5353 995 995 16.18% 18.59%
C 6154 5349 1757 1757 28.55% 32.85%
D 6152 5344 3740 3740 60.79% 69.99%

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 7 64 1236521 9551.52 520 507 129.4
A 12 3 756143 5839.31 520 507 129.4
A 4 249 109576 842.85 520 507 129.4
B 12 32 3438259 31436.96 502 484 109.4
B 4 206 184422 1682.03 502 484 109.4
B 10 247 118745 1081.45 502 484 109.4
C 15 224 4072584 32453.71 449 444 125.5
C 9 38 863309 6876.77 449 444 125.5
C 15 189 260728 2074.38 449 444 125.5
D 6 42 7622935 76324.49 346 331 99.9
D 12 17 2041494 20437.99 346 331 99.9
D 3 12 239566 2395.44 346 331 99.9

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