ASTROSAT CZTI

Data Quality Report

Orbit 05914

Creation date: 2024-06-27T15:00:46.832411
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/AS1A02_174T01_9000000766_05914cztM0_level2.evt modeM0/AS1A02_174T01_9000000766_05914cztM0_level2_quad_clean.evt
Size (bytes)2,233,457,280309,706,560
Size2.1 GB 295.4 MB
Events in quadrant A13,225,8341,907,520
Events in quadrant B14,569,1301,899,120
Events in quadrant C12,857,6851,895,356
Events in quadrant D25,030,7501,683,863

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061294622
B063907813
C060311665
D0968852548

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06008
B060010
C06008
D06004

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A290475741.976108%
B289966132.114085%
C290262931.009440%
D2881728309.820592%

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 31726 29348 53 53 0.17% 0.18%
B 31726 29331 73 73 0.23% 0.25%
C 31726 29338 17 17 0.05% 0.06%
D 31726 29256 2315 2315 7.30% 7.91%

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 15 236 350299 514.33 3301 3216 674.8
A 15 234 136944 198.17 3301 3216 674.8
A 12 194 32428 43.29 3301 3216 674.8
B 0 214 462625 724.81 3325 3244 633.8
B 15 255 337878 527.98 3325 3244 633.8
B 0 219 246252 383.42 3325 3244 633.8
C 9 247 207485 273.58 3229 3243 746.6
C 13 61 25739 30.13 3229 3243 746.6
C 8 128 17835 19.55 3229 3243 746.6
D 1 20 5535148 7264.5 3107 3015 761.5
D 2 152 2424240 3179.42 3107 3015 761.5
D 15 217 2102458 2756.88 3107 3015 761.5

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