ASTROSAT CZTI

Data Quality Report

Orbit 25368

Creation date: 2024-06-27T19:16:52.976281
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/AS1A09_104T01_9000003710_25368cztM0_level2.evt modeM0/AS1A09_104T01_9000003710_25368cztM0_level2_quad_clean.evt
Size (bytes)1,374,264,000251,294,400
Size1.3 GB 239.7 MB
Events in quadrant A9,337,8051,603,164
Events in quadrant B9,303,3101,616,369
Events in quadrant C9,376,9361,544,665
Events in quadrant D12,301,5901,521,464

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0401970
B0403170
C0402600
D0499340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192391100.571755%
B192401971.023909%
C192403131.626819%
D192403691.917879%

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 21334 19243 0 0 0.00% 0.00%
B 21335 19244 0 0 0.00% 0.00%
C 21335 19243 5 5 0.02% 0.03%
D 21335 19244 156 156 0.73% 0.81%

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 154004 323.94 2340 2292 468.3
A 15 173 145038 304.79 2340 2292 468.3
A 13 254 30670 60.59 2340 2292 468.3
B 0 190 75936 166.63 2322 2259 442.2
B 0 229 61108 133.1 2322 2259 442.2
B 12 111 56022 121.59 2322 2259 442.2
C 14 238 355632 679.87 2232 2243 519.8
C 7 87 222417 423.58 2232 2243 519.8
C 0 239 50304 92.46 2232 2243 519.8
D 8 195 2229483 4100.86 2253 2188 543.1
D 1 52 1075545 1976.25 2253 2188 543.1
D 2 244 228365 416.43 2253 2188 543.1

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