ASTROSAT CZTI

Data Quality Report

Orbit 42822

Creation date: 2024-06-27T22:44:39.477403
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_001T12_9000005826_42822cztM0_level2.fits modeM0/AS1C07_001T12_9000005826_42822cztM0_level2_quad_clean.evt
Size (bytes)316,828,80086,906,880
Size302.2 MB 82.9 MB
Events in quadrant A2,745,739586,688
Events in quadrant B2,446,329606,265
Events in quadrant C2,562,669583,495
Events in quadrant D3,585,538506,451

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112012
B0106412
C0107472
D0141172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4971210.422450%
B4971350.704084%
C4971420.844900%
D49713617.262120%

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 7064 4972 11 11 0.16% 0.22%
B 7064 4972 23 23 0.33% 0.46%
C 7064 4972 33 33 0.47% 0.66%
D 7064 4972 376 376 5.32% 7.56%

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 592725 5282.13 542 530 112.1
A 12 189 16780 144.94 542 530 112.1
A 15 237 16048 138.41 542 530 112.1
B 5 255 100114 970.62 547 533 102.6
B 5 172 63747 616.15 547 533 102.6
B 0 245 60734 586.78 547 533 102.6
C 15 214 200247 1612.75 538 542 123.8
C 14 254 125617 1010.06 538 542 123.8
C 3 233 118325 951.17 538 542 123.8
D 12 33 749006 5894.7 522 505 127.0
D 14 49 237474 1866.21 522 505 127.0
D 1 47 94876 743.2 522 505 127.0

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