ASTROSAT CZTI

Data Quality Report

Orbit 41758

Creation date: 2024-06-27T22:32:29.558408
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_077T11_9000005696_41758cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41758cztM0_level2_quad_clean.evt
Size (bytes)1,211,143,680241,413,120
Size1.1 GB 230.2 MB
Events in quadrant A8,166,8801,664,813
Events in quadrant B8,099,7611,675,890
Events in quadrant C9,702,1501,588,376
Events in quadrant D17,657,6321,303,506

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0530
C0530
D0530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03349710
B03478617
C03873321
D06341238

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15606210.134564%
B156003412.185897%
C155985273.378638%
D15599246715.815116%

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 19727 15611 9 9 0.05% 0.06%
B 19726 15602 250 250 1.27% 1.60%
C 19726 15604 526 526 2.67% 3.37%
D 19726 15606 2476 2476 12.55% 15.87%

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 1369760 3846.84 1737 1702 355.6
A 13 6 36965 99.16 1737 1702 355.6
A 10 255 28260 74.68 1737 1702 355.6
B 5 255 966438 2903.69 1709 1664 332.3
B 0 245 202505 604.47 1709 1664 332.3
B 3 112 87516 258.39 1709 1664 332.3
C 0 10 1934412 5014.61 1652 1662 385.4
C 15 214 665089 1721.29 1652 1662 385.4
C 14 254 657175 1700.76 1652 1662 385.4
D 12 79 8450862 21662.28 1592 1546 390.0
D 2 249 1502750 3848.77 1592 1546 390.0
D 12 6 607266 1552.94 1592 1546 390.0

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