ASTROSAT CZTI

Data Quality Report

Orbit 55197

Creation date: 2025-12-11T03:27:14.730188
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/AS1A14_022T16_9000006532_55197cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55197cztM0_level2_quad_clean.evt
Size (bytes)590,204,16093,663,360
Size562.9 MB 89.3 MB
Events in quadrant A10,147,945434,126
Events in quadrant B2,989,276711,215
Events in quadrant C3,724,565629,038
Events in quadrant D4,451,131582,488

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349243
B0140852
C0161332
D0182282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6879260337.839802%
B6879781.133886%
C68801221.773256%
D68802964.302326%

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 8933 6879 2235 2235 25.02% 32.49%
B 8934 6881 3 3 0.03% 0.04%
C 8935 6882 48 48 0.54% 0.70%
D 8935 6882 186 186 2.08% 2.70%

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 45 5378004 37109.48 585 572 144.9
A 12 115 2123876 14652.85 585 572 144.9
A 0 8 127975 879.2 585 572 144.9
B 12 111 19207 115.93 739 711 159.5
B 11 111 18243 109.89 739 711 159.5
B 10 247 18227 109.79 739 711 159.5
C 13 3 189898 947.69 727 720 199.6
C 1 16 181310 904.67 727 720 199.6
C 6 13 124810 621.63 727 720 199.6
D 11 129 569645 2835.08 713 683 200.7
D 2 249 383125 1905.67 713 683 200.7
D 7 96 230649 1145.9 713 683 200.7

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