ASTROSAT CZTI

Data Quality Report

Orbit 52952

Creation date: 2025-07-17T12:53:20.426157
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/AS1A13_003T01_9000006486_52952cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52952cztM0_level2_quad_clean.evt
Size (bytes)1,177,430,40080,547,840
Size1.1 GB 76.8 MB
Events in quadrant A17,489,273118,115
Events in quadrant B3,559,829737,179
Events in quadrant C14,034,551496,133
Events in quadrant D7,950,347584,869

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0566110
B0157260
C0466170
D0285150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71337133100.000000%
B71331131.584186%
C7134441461.872722%
D713497813.708999%

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 7132 7132 6876 6876 96.41% 96.41%
B 7133 7133 46 46 0.64% 0.64%
C 7133 7133 3815 3815 53.48% 53.48%
D 7134 7134 861 861 12.07% 12.07%

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 15634164 390703.21 148 143 40.0
A 8 245 749650 18730.61 148 143 40.0
A 4 249 284169 7097.97 148 143 40.0
B 10 63 113415 686.36 768 743 164.2
B 0 171 58224 350.15 768 743 164.2
B 5 185 57874 348.02 768 743 164.2
C 10 171 8331579 52161.8 584 579 159.7
C 7 80 1107578 6931.11 584 579 159.7
C 12 254 1037644 6493.24 584 579 159.7
D 15 78 2132839 10436.03 717 685 204.3
D 3 12 653182 3193.71 717 685 204.3
D 8 48 508319 2484.66 717 685 204.3

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