ASTROSAT CZTI

Data Quality Report

Orbit 20617

Creation date: 2024-06-27T18:17:38.132536
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/AS1A05_007T06_9000003050_20617cztM0_level2.evt modeM0/AS1A05_007T06_9000003050_20617cztM0_level2_quad_clean.evt
Size (bytes)272,882,88043,464,960
Size260.2 MB 41.5 MB
Events in quadrant A1,434,780304,364
Events in quadrant B1,526,597302,360
Events in quadrant C1,562,208290,719
Events in quadrant D3,537,542207,423

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08216
B08220
C08216
D08220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082762102
B085282110
C086822214
D0152682808

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2954290.981720%
B2958662.231237%
C2963913.071212%
D289083428.858131%

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 4788 3351 0 0 0.00% 0.00%
B 4788 3343 7 7 0.15% 0.21%
C 4788 3357 0 0 0.00% 0.00%
D 4787 3290 675 675 14.10% 20.52%

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 0 226 3296 38.49 372 363 76.2
A 3 137 3121 36.2 372 363 76.2
A 12 194 2908 33.4 372 363 76.2
B 7 220 32778 453.71 370 360 71.5
B 0 197 15412 210.66 370 360 71.5
B 12 111 8205 109.8 370 360 71.5
C 8 208 97512 1138.18 359 359 85.4
C 14 238 57050 664.15 359 359 85.4
C 3 233 5835 64.15 359 359 85.4
D 1 52 2180942 29744.02 294 284 73.3
D 7 238 124264 1691.08 294 284 73.3
D 1 20 37162 503.01 294 284 73.3

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