ASTROSAT CZTI

Data Quality Report

Orbit 01244

Creation date: 2024-06-27T14:09:44.536779
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/AS1G04_011T02_9000000226_01244cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01244cztM0_level2_quad_clean.evt
Size (bytes)1,175,446,08078,670,080
Size1.1 GB 75.0 MB
Events in quadrant A6,449,875578,584
Events in quadrant B14,228,320341,359
Events in quadrant C6,590,579571,133
Events in quadrant D7,976,142514,576

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229382
B0465791
C0233411
D0275651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5356100.186706%
B5356336162.752054%
C5356130.242718%
D535657810.791636%

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 6615 5356 145 145 2.19% 2.71%
B 6616 5356 4257 4257 64.34% 79.48%
C 6616 5356 152 152 2.30% 2.84%
D 6616 5356 983 983 14.86% 18.35%

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 3 80 75319 186.5 1657 1662 394.9
A 12 243 14180 31.7 1657 1662 394.9
A 11 79 7830 15.62 1657 1662 394.9
B 2 32 9384754 34961.16 1152 1155 268.4
B 8 4 327917 1217.44 1152 1155 268.4
B 6 53 49712 180.91 1152 1155 268.4
C 15 241 278653 633.31 1597 1653 437.4
C 9 52 30090 65.02 1597 1653 437.4
C 3 111 19238 40.2 1597 1653 437.4
D 12 79 1791254 4029.13 1455 1506 444.2
D 1 239 340871 763.99 1455 1506 444.2
D 10 84 293566 657.49 1455 1506 444.2

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