ASTROSAT CZTI

Data Quality Report

Orbit 51392

Creation date: 2025-03-29T23:17:32.224329
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/AS1C07_001T03_9000006456_51392cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51392cztM0_level2_quad_clean.evt
Size (bytes)157,962,24011,868,480
Size150.6 MB 11.3 MB
Events in quadrant A1,890,40356,961
Events in quadrant B848,64893,862
Events in quadrant C2,190,40039,620
Events in quadrant D825,92182,297

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0262
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06579166
B0333364
C07607298
D0330979

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114055648.771930%
B115116414.248480%
C114182071.866784%
D1148716.184669%

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 2278 1147 339 339 14.88% 29.56%
B 2285 1155 39 39 1.71% 3.38%
C 2269 1140 639 639 28.16% 56.05%
D 2283 1152 17 17 0.74% 1.48%

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 12 3 560781 16885.32 130 125 33.2
A 15 174 268064 8069.54 130 125 33.2
A 4 175 217582 6549.17 130 125 33.2
B 5 185 197099 6087.48 144 139 32.4
B 8 128 17025 521.9 144 139 32.4
B 4 81 15357 470.35 144 139 32.4
C 4 12 1125940 39893.0 100 99 28.2
C 15 179 483908 17143.27 100 99 28.2
C 15 248 56561 2000.67 100 99 28.2
D 11 176 150423 3691.81 147 141 40.7
D 2 153 38457 941.27 147 141 40.7
D 6 30 18876 460.24 147 141 40.7

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