ASTROSAT CZTI

Data Quality Report

Orbit 21503

Creation date: 2024-06-27T18:28:41.134079
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/AS1T03_141T01_9000003174_21503cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21503cztM0_level2_quad_clean.evt
Size (bytes)1,316,940,480242,985,600
Size1.2 GB 231.7 MB
Events in quadrant A8,500,5811,545,292
Events in quadrant B8,896,0121,577,410
Events in quadrant C8,623,6321,526,552
Events in quadrant D12,616,5501,438,774

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376120
B0384140
C0376800
D0500190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18437680.368824%
B184371160.629170%
C184371180.640017%
D184379285.033357%

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 20822 18439 0 0 0.00% 0.00%
B 20822 18439 10 10 0.05% 0.05%
C 20822 18440 0 0 0.00% 0.00%
D 20822 18440 743 743 3.57% 4.03%

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 13 254 30265 63.49 2203 2156 442.7
A 0 226 18966 37.97 2203 2156 442.7
A 3 137 18896 37.81 2203 2156 442.7
B 0 230 83497 194.46 2206 2149 418.3
B 0 190 72937 169.22 2206 2149 418.3
B 12 111 51100 117.02 2206 2149 418.3
C 14 238 333340 670.81 2117 2129 493.7
C 13 61 14890 25.85 2117 2129 493.7
C 8 128 14242 24.53 2117 2129 493.7
D 1 52 1646582 2988.93 2077 2038 550.2
D 14 35 717298 1299.97 2077 2038 550.2
D 5 222 683247 1238.08 2077 2038 550.2

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