ASTROSAT CZTI

Data Quality Report

Orbit 30822

Creation date: 2024-06-27T20:20:01.825023
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/AS1C06_003T01_9000004452_30822cztM0_level2.evt modeM0/AS1C06_003T01_9000004452_30822cztM0_level2_quad_clean.evt
Size (bytes)281,923,20057,260,160
Size268.9 MB 54.6 MB
Events in quadrant A1,479,012395,364
Events in quadrant B2,509,281389,919
Events in quadrant C1,482,673374,585
Events in quadrant D2,852,553350,432

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065100
B097670
C063960
D0106860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A313650.159439%
B3137371.179471%
C3137190.605674%
D313732910.487727%

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 3136 3136 3 3 0.10% 0.10%
B 3137 3137 25 25 0.80% 0.80%
C 3137 3137 0 0 0.00% 0.00%
D 3137 3137 320 320 10.20% 10.20%

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 80570 1086.45 362 354 73.8
A 13 254 5690 72.27 362 354 73.8
A 3 137 3436 41.74 362 354 73.8
B 6 159 932089 13712.83 353 344 67.9
B 5 172 109544 1607.14 353 344 67.9
B 0 229 21047 304.69 353 344 67.9
C 3 233 65818 814.43 340 342 80.4
C 14 238 55782 689.59 340 342 80.4
C 1 16 8570 102.34 340 342 80.4
D 8 195 1315971 16362.22 333 325 80.4
D 12 6 81961 1015.28 333 325 80.4
D 2 250 51343 634.49 333 325 80.4

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