ASTROSAT CZTI

Data Quality Report

Orbit 37028

Creation date: 2024-06-27T21:34:29.075719
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/AS1T05_046T01_9000005266_37028cztM0_level2.evt modeM0/AS1T05_046T01_9000005266_37028cztM0_level2_quad_clean.evt
Size (bytes)441,570,24062,110,080
Size421.1 MB 59.2 MB
Events in quadrant A2,606,868405,585
Events in quadrant B3,069,233402,262
Events in quadrant C2,901,575386,072
Events in quadrant D4,462,914342,763

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106983
B0121692
C0115402
D0164882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4898140.285831%
B4898801.633320%
C4898791.612903%
D48984609.391588%

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 6960 4899 7 7 0.10% 0.14%
B 6960 4899 65 65 0.93% 1.33%
C 6960 4899 68 68 0.98% 1.39%
D 6960 4899 434 434 6.24% 8.86%

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 224129 1834.78 608 598 121.8
A 13 6 14952 117.82 608 598 121.8
A 9 143 7826 59.33 608 598 121.8
B 5 184 412510 3634.79 600 587 113.3
B 5 172 139992 1230.1 600 587 113.3
B 5 255 38777 336.99 600 587 113.3
C 15 214 211968 1575.72 577 583 134.2
C 14 254 188694 1402.23 577 583 134.2
C 0 10 162630 1207.94 577 583 134.2
D 12 235 705128 5170.16 560 546 136.3
D 13 249 685831 5028.56 560 546 136.3
D 2 250 292118 2139.53 560 546 136.3

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