ASTROSAT CZTI

Data Quality Report

Orbit 48372

Creation date: 2024-09-07T13:20:32.400333
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/AS1A13_029T01_9000006426_48372cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48372cztM0_level2_quad_clean.evt
Size (bytes)1,610,184,960361,275,840
Size1.5 GB 344.5 MB
Events in quadrant A24,095,1012,344,324
Events in quadrant B11,614,8192,471,690
Events in quadrant C10,223,4062,369,991
Events in quadrant D11,879,4792,156,169

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0870562
B0511792
C0483012
D0527792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04680
B04680
C04680
D04680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2318611184.821875%
B231873491.505154%
C231871270.547721%
D231873511.513779%

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 24250 23186 458 458 1.89% 1.98%
B 24251 23186 85 85 0.35% 0.37%
C 24251 23188 68 68 0.28% 0.29%
D 24251 23188 301 301 1.24% 1.30%

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 10 83 13323450 25779.64 2484 2434 516.7
A 0 31 764011 1473.85 2484 2434 516.7
A 13 248 389730 749.52 2484 2434 516.7
B 4 21 472284 956.82 2499 2418 491.1
B 0 186 333832 674.88 2499 2418 491.1
B 0 200 304435 615.02 2499 2418 491.1
C 12 2 242818 413.64 2472 2483 581.0
C 14 254 175853 298.39 2472 2483 581.0
C 15 208 101689 170.74 2472 2483 581.0
D 2 249 1616422 2615.37 2464 2388 617.1
D 5 32 329952 530.78 2464 2388 617.1
D 2 120 130391 207.42 2464 2388 617.1

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