ASTROSAT CZTI

Data Quality Report

Orbit 51434

Creation date: 2025-04-02T11:38:22.465629
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_090T01_9000006458_51434cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51434cztM0_level2_quad_clean.evt
Size (bytes)769,939,20091,209,600
Size734.3 MB 87.0 MB
Events in quadrant A8,138,590552,143
Events in quadrant B4,249,759704,212
Events in quadrant C10,944,269412,832
Events in quadrant D4,615,104595,254

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291912
B0175472
C0374512
D0186403

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7136149320.922085%
B71373384.735883%
C7137290440.689365%
D71362924.091928%

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 8856 7136 1096 1096 12.38% 15.36%
B 8857 7137 112 112 1.26% 1.57%
C 8857 7137 2550 2550 28.79% 35.73%
D 8856 7136 148 148 1.67% 2.07%

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 7 64 2055402 11715.68 717 698 175.4
A 12 3 1031839 5879.45 717 698 175.4
A 12 250 851839 4853.11 717 698 175.4
B 4 206 437886 2635.62 768 739 165.9
B 6 51 127933 766.87 768 739 165.9
B 15 52 118660 710.96 768 739 165.9
C 4 12 4797198 29149.72 601 598 164.6
C 0 176 1228319 7461.06 601 598 164.6
C 15 179 958441 5820.97 601 598 164.6
D 8 176 400680 1890.19 756 730 211.6
D 7 96 354576 1672.3 756 730 211.6
D 3 12 319940 1508.6 756 730 211.6

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