ASTROSAT CZTI

Data Quality Report

Orbit 40570

Creation date: 2024-06-27T22:17:42.296135
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_054T02_9000005550_40570cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40570cztM0_level2_quad_clean.evt
Size (bytes)1,210,262,400233,501,760
Size1.1 GB 222.7 MB
Events in quadrant A8,273,8651,682,403
Events in quadrant B17,329,7591,528,643
Events in quadrant C7,273,6721,642,473
Events in quadrant D10,706,1561,132,216

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342345
B0626114
C0320214
D0429374

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15690340.216699%
B15690187211.931166%
C15690370.235819%
D15690426527.182919%

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 19840 15693 13 13 0.07% 0.08%
B 19840 15693 1490 1490 7.51% 9.49%
C 19840 15693 31 31 0.16% 0.20%
D 19839 15692 458 458 2.31% 2.92%

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 1277276 3737.06 1682 1650 341.3
A 15 191 440803 1286.54 1682 1650 341.3
A 12 189 45320 127.94 1682 1650 341.3
B 3 112 10107608 33205.35 1609 1564 304.3
B 5 255 315299 1030.84 1609 1564 304.3
B 7 202 204205 665.82 1609 1564 304.3
C 15 214 674102 1762.1 1642 1651 381.6
C 14 254 95345 245.52 1642 1651 381.6
C 0 10 76708 196.68 1642 1651 381.6
D 12 227 2862673 7897.76 1463 1421 362.3
D 12 191 789688 2175.81 1463 1421 362.3
D 12 79 461056 1268.7 1463 1421 362.3

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