ASTROSAT CZTI

Data Quality Report

Orbit 37442

Creation date: 2024-06-27T21:40:02.013522
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/AS1A09_002T01_9000005322_37442cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37442cztM0_level2_quad_clean.evt
Size (bytes)1,330,027,200211,674,240
Size1.2 GB 201.9 MB
Events in quadrant A10,646,3631,303,104
Events in quadrant B9,120,6701,347,024
Events in quadrant C9,081,5221,372,053
Events in quadrant D10,385,4331,318,762

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413315
B0374114
C0367474
D0414354

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1550810356.673975%
B155084312.779211%
C155083762.424555%
D1550810256.609492%

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 19715 15511 940 940 4.77% 6.06%
B 19714 15510 300 300 1.52% 1.93%
C 19715 15511 352 352 1.79% 2.27%
D 19715 15511 749 749 3.80% 4.83%

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 15 222 2859327 8423.68 1691 1655 339.2
A 10 83 718765 2113.86 1691 1655 339.2
A 9 143 229185 670.7 1691 1655 339.2
B 4 171 572072 1768.66 1707 1664 322.5
B 15 35 272926 841.1 1707 1664 322.5
B 0 189 225562 694.24 1707 1664 322.5
C 14 254 969073 2485.75 1676 1684 389.2
C 15 214 692451 1774.96 1676 1684 389.2
C 0 207 461377 1181.2 1676 1684 389.2
D 12 227 1130139 2809.88 1640 1595 401.6
D 2 249 819032 2035.28 1640 1595 401.6
D 13 249 327739 812.04 1640 1595 401.6

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