ASTROSAT CZTI

Data Quality Report

Orbit 10485

Creation date: 2024-06-27T16:00:04.193281
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/AS1G07_027T01_9000001516_10485cztM0_level2.evt modeM0/AS1G07_027T01_9000001516_10485cztM0_level2_quad_clean.evt
Size (bytes)339,707,52070,922,880
Size324.0 MB 67.6 MB
Events in quadrant A2,588,522468,833
Events in quadrant B2,306,639430,145
Events in quadrant C2,556,724517,047
Events in quadrant D2,479,494366,103

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290159
B0290156
C0290158
D0276144

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073
B084
C084
D073

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920118670
B03324023461
C02898017412
D03489225186

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A526530.056980%
B489030.061350%
C578620.034566%
D467090.192719%

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 7533 6316 0 0 0.00% 0.00%
B 7533 5885 0 0 0.00% 0.00%
C 7533 6627 0 0 0.00% 0.00%
D 7530 5517 0 0 0.00% 0.00%

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 15 239 165278 1328.88 603 590 123.9
A 3 80 77362 619.48 603 590 123.9
A 5 16 7748 57.76 603 590 123.9
B 0 214 44999 406.8 563 549 109.3
B 4 239 34182 307.8 563 549 109.3
B 0 219 14938 131.68 563 549 109.3
C 8 128 8585 52.04 651 654 152.4
C 8 112 4929 28.05 651 654 152.4
C 13 61 4776 27.05 651 654 152.4
D 8 195 379756 3050.51 511 498 124.3
D 1 20 71954 574.75 511 498 124.3
D 1 52 71278 569.31 511 498 124.3

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