ASTROSAT CZTI

Data Quality Report

Orbit 00615

Creation date: 2024-06-27T14:00:36.660734
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/AS1P01_116T01_9000000086_00615cztM0_level2.evt modeM0/AS1P01_116T01_9000000086_00615cztM0_level2_quad_clean.evt
Size (bytes)849,191,04073,756,800
Size809.9 MB 70.3 MB
Events in quadrant A7,411,019457,416
Events in quadrant B6,438,336476,313
Events in quadrant C5,445,616474,934
Events in quadrant D6,077,970461,004

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257323
B0227982
C0198772
D0217682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51893636.995568%
B5189170.327616%
C518920.038543%
D5189751.445365%

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 7344 5190 722 722 9.83% 13.91%
B 7344 5190 196 196 2.67% 3.78%
C 7344 5190 32 32 0.44% 0.62%
D 7344 5190 228 228 3.10% 4.39%

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 0 69 979192 2899.09 1508 1495 337.2
A 15 171 467942 1383.12 1508 1495 337.2
A 13 160 66997 194.23 1508 1495 337.2
B 0 220 141001 378.99 1548 1559 367.9
B 5 2 131654 353.58 1548 1559 367.9
B 7 221 101879 272.66 1548 1559 367.9
C 15 241 35581 88.86 1372 1418 384.5
C 5 249 8359 18.05 1372 1418 384.5
C 1 1 6070 12.1 1372 1418 384.5
D 13 221 397351 951.49 1311 1361 416.2
D 1 4 121368 288.35 1311 1361 416.2
D 7 143 115423 274.07 1311 1361 416.2

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