ASTROSAT CZTI

Data Quality Report

Orbit 37471

Creation date: 2024-06-27T21:40:24.995617
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/AS1A11_027T01_9000005324_37471cztM0_level2.evt modeM0/AS1A11_027T01_9000005324_37471cztM0_level2_quad_clean.evt
Size (bytes)1,632,317,760373,763,520
Size1.5 GB 356.4 MB
Events in quadrant A12,639,2302,459,233
Events in quadrant B10,909,9732,513,278
Events in quadrant C11,186,3482,536,567
Events in quadrant D13,302,9062,386,937

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04220
B04220
C04220
D04220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0610

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0512696
B0460995
C0461725
D0539775

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A207021490.719737%
B207023191.540914%
C207023581.729302%
D207029804.733842%

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 26194 20706 111 111 0.42% 0.54%
B 26194 20706 215 215 0.82% 1.04%
C 26194 20706 304 304 1.16% 1.47%
D 26194 20705 848 848 3.24% 4.10%

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 15 222 2156800 4708.56 2282 2235 457.6
A 10 83 955342 2082.91 2282 2235 457.6
A 13 248 279247 605.38 2282 2235 457.6
B 5 172 565205 1302.22 2282 2219 432.3
B 5 173 232124 531.78 2282 2219 432.3
B 5 184 216131 494.79 2282 2219 432.3
C 14 254 878256 1696.94 2238 2254 516.2
C 15 214 872604 1685.99 2238 2254 516.2
C 0 10 463507 893.51 2238 2254 516.2
D 13 249 2627123 4904.7 2203 2139 535.2
D 2 249 907082 1690.86 2203 2139 535.2
D 12 233 264545 490.3 2203 2139 535.2

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