ASTROSAT CZTI

Data Quality Report

Orbit 09492

Creation date: 2024-06-27T15:46:46.413957
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/AS1A03_005T01_9000001348_09492cztM0_level2.evt modeM0/AS1A03_005T01_9000001348_09492cztM0_level2_quad_clean.evt
Size (bytes)1,593,077,760254,995,200
Size1.5 GB 243.2 MB
Events in quadrant A12,528,1401,566,550
Events in quadrant B9,689,9211,588,494
Events in quadrant C11,334,3511,571,827
Events in quadrant D13,259,9551,533,142

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05117755
B04335727
C04848443
D05407051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04320
B04320
C04320
D04320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A212422151.012146%
B212481510.710655%
C212485252.470821%
D212433851.812362%

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 22815 21263 12 12 0.05% 0.06%
B 22815 21263 0 0 0.00% 0.00%
C 22815 21263 285 285 1.25% 1.34%
D 22815 21263 257 257 1.13% 1.21%

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 8 5 2380763 4763.06 2457 2407 499.3
A 1 162 353927 703.98 2457 2407 499.3
A 1 178 130704 256.94 2457 2407 499.3
B 4 173 129044 270.69 2462 2402 467.8
B 12 111 54866 112.14 2462 2402 467.8
B 11 111 44810 90.64 2462 2402 467.8
C 4 254 1859977 3381.43 2381 2398 549.3
C 9 68 181830 326.63 2381 2398 549.3
C 13 61 17528 27.54 2381 2398 549.3
D 8 195 1897534 3184.96 2373 2315 595.1
D 1 52 834049 1397.75 2373 2315 595.1
D 2 136 603005 1009.47 2373 2315 595.1

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