ASTROSAT CZTI

Data Quality Report

Orbit 23549

Creation date: 2024-06-27T18:56:01.282691
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/AS1A07_011T01_9000003482_23549cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23549cztM0_level2_quad_clean.evt
Size (bytes)1,536,419,520302,431,680
Size1.4 GB 288.4 MB
Events in quadrant A9,536,5361,979,087
Events in quadrant B10,870,0822,011,716
Events in quadrant C9,711,5541,935,212
Events in quadrant D15,020,8591,815,689

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0291
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04242
B04264
C04253
D04253

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042507354
B046054361
C042796360
D059421408

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A205881100.534292%
B205862771.345575%
C205862211.073545%
D2058416077.807035%

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 44305 20604 3 3 0.01% 0.01%
B 44306 20604 94 94 0.21% 0.46%
C 44306 20602 5 5 0.01% 0.02%
D 44306 20603 1376 1376 3.11% 6.68%

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 37033 71.05 2457 2407 487.4
A 13 252 24915 46.18 2457 2407 487.4
A 6 16 23561 43.4 2457 2407 487.4
B 3 64 508688 1107.39 2449 2392 457.2
B 0 189 353650 768.28 2449 2392 457.2
B 0 229 201468 435.43 2449 2392 457.2
C 14 238 376611 687.69 2356 2373 544.2
C 7 247 61197 108.09 2356 2373 544.2
C 10 9 36076 61.93 2356 2373 544.2
D 1 52 4724781 8530.14 2301 2240 553.6
D 9 85 670285 1206.66 2301 2240 553.6
D 7 38 546237 982.6 2301 2240 553.6

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