ASTROSAT CZTI

Data Quality Report

Orbit 26542

Creation date: 2024-06-27T19:30:14.429140
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/AS1A09_095T02_9000003840_26542cztM0_level2.evt modeM0/AS1A09_095T02_9000003840_26542cztM0_level2_quad_clean.evt
Size (bytes)1,753,122,240334,134,720
Size1.6 GB 318.7 MB
Events in quadrant A10,238,4922,202,302
Events in quadrant B12,150,9022,220,974
Events in quadrant C13,278,8292,149,209
Events in quadrant D15,987,3082,079,636

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0439080
B0497580
C0531890
D0616080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A213241820.853498%
B213246743.160758%
C213259754.572098%
D2132413176.176140%

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 23694 21327 42 42 0.18% 0.20%
B 23694 21325 395 395 1.67% 1.85%
C 23695 21326 384 384 1.62% 1.80%
D 23694 21325 996 996 4.20% 4.67%

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 13 286474 569.16 2515 2456 499.0
A 5 168 207542 410.98 2515 2456 499.0
A 9 130 44890 85.04 2515 2456 499.0
B 3 64 2040493 4341.69 2486 2421 469.4
B 3 112 232925 491.04 2486 2421 469.4
B 12 111 57524 117.39 2486 2421 469.4
C 4 254 2568899 4596.02 2408 2421 558.4
C 3 233 929731 1660.62 2408 2421 558.4
C 14 238 385803 686.56 2408 2421 558.4
D 1 52 3525328 6186.84 2406 2353 569.4
D 2 250 1313968 2303.38 2406 2353 569.4
D 12 1 894614 1566.94 2406 2353 569.4

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