ASTROSAT CZTI

Data Quality Report

Orbit 52100

Creation date: 2025-05-16T17:19:21.087020
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/AS1C09_011T07_9000006470_52100cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52100cztM0_level2_quad_clean.evt
Size (bytes)1,092,611,52058,250,880
Size1.0 GB 55.6 MB
Events in quadrant A3,967,642561,715
Events in quadrant B10,509,222327,563
Events in quadrant C12,049,015261,439
Events in quadrant D13,434,542173,523

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160192
B03556412
C04018122
D04421533

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62892844.515821%
B6288326251.876590%
C6286352456.061088%
D6285431768.687351%

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 7070 6291 161 161 2.28% 2.56%
B 7069 6290 2542 2542 35.96% 40.41%
C 7069 6289 2987 2987 42.25% 47.50%
D 7069 6289 4280 4280 60.55% 68.06%

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 3 114 319958 1962.0 655 638 162.8
A 8 43 212038 1298.91 655 638 162.8
A 3 61 204959 1255.41 655 638 162.8
B 8 3 7213950 69640.85 483 466 103.6
B 10 254 769314 7422.66 483 466 103.6
B 10 44 118754 1141.98 483 466 103.6
C 5 80 6273262 56458.58 400 395 111.1
C 15 224 3167629 28506.51 400 395 111.1
C 15 147 461656 4151.55 400 395 111.1
D 6 42 7811539 65911.81 411 392 118.5
D 15 94 1851616 15620.95 411 392 118.5
D 12 17 1389683 11723.08 411 392 118.5

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