ASTROSAT CZTI

Data Quality Report

Orbit 53015

Creation date: 2025-07-17T10:12:06.432682
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_9000006488_53015cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53015cztM0_level2_quad_clean.evt
Size (bytes)1,078,689,60086,630,400
Size1.0 GB 82.6 MB
Events in quadrant A17,101,026102,562
Events in quadrant B5,934,369704,213
Events in quadrant C9,355,314610,246
Events in quadrant D6,965,325689,608

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0556962
B0230622
C0329552
D0259262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7423641686.434056%
B742391312.299609%
C7424163221.982759%
D74245086.842672%

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 8968 7423 6194 6194 69.07% 83.44%
B 8967 7424 717 717 8.00% 9.66%
C 8969 7426 1387 1387 15.46% 18.68%
D 8969 7426 422 422 4.71% 5.68%

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 9 191 14820473 177505.62 314 305 83.5
A 15 190 685153 8202.63 314 305 83.5
A 3 62 98258 1173.21 314 305 83.5
B 10 44 1499579 9424.85 735 710 159.0
B 8 128 584299 3669.59 735 710 159.0
B 10 128 340141 2134.33 735 710 159.0
C 15 224 3740315 18837.02 711 706 198.5
C 1 241 842024 4237.85 711 706 198.5
C 1 16 632682 3183.36 711 706 198.5
D 2 62 2042661 8853.15 777 741 230.6
D 8 176 528527 2288.32 777 741 230.6
D 15 78 331631 1434.64 777 741 230.6

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