ASTROSAT CZTI

Data Quality Report

Orbit 18969

Creation date: 2024-06-27T17:57:12.823554
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_205T01_9000002824_18969cztM0_level2.evt modeM0/AS1A05_205T01_9000002824_18969cztM0_level2_quad_clean.evt
Size (bytes)1,099,160,640163,788,480
Size1.0 GB 156.2 MB
Events in quadrant A5,908,4241,051,973
Events in quadrant B6,552,6221,063,280
Events in quadrant C5,965,0511,030,393
Events in quadrant D13,999,468932,000

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260512
B0276582
C0259382
D0504422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12767660.516958%
B127681731.354950%
C127681030.806704%
D12768229217.951128%

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 13947 12769 0 0 0.00% 0.00%
B 13948 12770 47 47 0.34% 0.37%
C 13948 12770 0 0 0.00% 0.00%
D 13948 12770 1847 1847 13.24% 14.46%

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 14 235 48626 153.08 1520 1484 308.0
A 13 254 16107 47.48 1520 1484 308.0
A 0 226 13199 38.04 1520 1484 308.0
B 7 220 377025 1318.19 1509 1473 284.9
B 3 112 100022 345.91 1509 1473 284.9
B 0 197 38307 129.29 1509 1473 284.9
C 14 238 225503 652.75 1461 1470 343.2
C 3 233 21954 59.68 1461 1470 343.2
C 9 54 16685 44.33 1461 1470 343.2
D 12 218 2977757 8907.46 1362 1322 334.2
D 7 238 2937804 8787.9 1362 1322 334.2
D 1 52 1900293 5682.98 1362 1322 334.2

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