ASTROSAT CZTI

Data Quality Report

Orbit 40485

Creation date: 2024-06-27T22:16:41.458321
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/AS1A12_022T01_9000005540_40485cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40485cztM0_level2_quad_clean.evt
Size (bytes)313,179,84088,090,560
Size298.7 MB 84.0 MB
Events in quadrant A2,851,812602,294
Events in quadrant B2,718,707616,590
Events in quadrant C2,573,639589,599
Events in quadrant D3,014,557469,965

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118613
B0119642
C0113302
D0130012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A555870.125945%
B5558170.305865%
C555860.107953%
D555887315.707089%

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 8844 5560 2 2 0.02% 0.04%
B 8844 5560 10 10 0.11% 0.18%
C 8844 5560 1 1 0.01% 0.02%
D 8844 5560 89 89 1.01% 1.60%

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 10 83 509556 4191.29 594 581 121.4
A 12 189 14341 113.31 594 581 121.4
A 13 6 11418 89.24 594 581 121.4
B 4 170 361974 3159.16 589 572 114.4
B 5 255 14603 122.65 589 572 114.4
B 12 111 14601 122.63 589 572 114.4
C 15 214 240498 1774.85 576 579 135.2
C 9 187 56141 411.03 576 579 135.2
C 14 254 19348 138.85 576 579 135.2
D 2 250 491269 3772.13 527 510 130.1
D 12 191 216845 1662.82 527 510 130.1
D 12 128 78077 596.2 527 510 130.1

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