ASTROSAT CZTI

Data Quality Report

Orbit 18771

Creation date: 2024-06-27T17:54:37.847912
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_115T03_9000002806_18771cztM0_level2.evt modeM0/AS1A05_115T03_9000002806_18771cztM0_level2_quad_clean.evt
Size (bytes)318,669,12053,012,160
Size303.9 MB 50.6 MB
Events in quadrant A2,685,121328,110
Events in quadrant B2,227,153334,332
Events in quadrant C2,200,899315,376
Events in quadrant D2,234,194314,053

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106741
B092151
C091731
D094421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4455691.548822%
B4455100.224467%
C4455140.314254%
D445540.089787%

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 4455 4455 49 49 1.10% 1.10%
B 4455 4455 0 0 0.00% 0.00%
C 4455 4455 0 0 0.00% 0.00%
D 4455 4455 3 3 0.07% 0.07%

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 6 16 467591 4125.79 566 557 113.2
A 15 192 25281 218.41 566 557 113.2
A 9 143 7638 62.55 566 557 113.2
B 12 111 12905 114.75 562 549 107.7
B 11 111 11270 99.57 562 549 107.7
B 0 229 10696 94.24 562 549 107.7
C 14 238 85243 676.52 537 539 125.2
C 3 233 18081 140.11 537 539 125.2
C 13 61 3789 25.96 537 539 125.2
D 7 238 71919 533.84 550 537 133.7
D 1 52 36435 268.47 550 537 133.7
D 7 96 19507 141.87 550 537 133.7

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