ASTROSAT CZTI

Data Quality Report

Orbit 38358

Creation date: 2024-06-27T21:51:36.701277
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/AS1A10_094T24_9000005374_38358cztM0_level2.fits modeM0/AS1A10_094T24_9000005374_38358cztM0_level2_quad_clean.evt
Size (bytes)1,391,114,880211,461,120
Size1.3 GB 201.7 MB
Events in quadrant A10,847,1681,444,725
Events in quadrant B7,480,2741,557,466
Events in quadrant C6,416,6801,525,561
Events in quadrant D25,724,924955,948

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0407764
B0307983
C0274913
D0856693

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1330110507.894143%
B133011841.383355%
C13301270.202992%
D13301520739.147433%

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 18437 13304 816 816 4.43% 6.13%
B 18437 13304 121 121 0.66% 0.91%
C 18437 13304 17 17 0.09% 0.13%
D 18437 13304 5992 5992 32.50% 45.04%

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 3131614 10739.01 1465 1436 291.5
A 10 83 873893 2993.22 1465 1436 291.5
A 9 143 724814 2481.76 1465 1436 291.5
B 4 170 551650 1979.13 1488 1449 278.0
B 5 200 225318 805.28 1488 1449 278.0
B 0 183 219409 784.02 1488 1449 278.0
C 15 214 562267 1665.64 1457 1464 336.7
C 0 207 56040 162.09 1457 1464 336.7
C 15 159 33390 94.82 1457 1464 336.7
D 10 203 17659535 53082.7 1342 1302 332.7
D 2 16 1014765 3046.59 1342 1302 332.7
D 12 227 747146 2242.09 1342 1302 332.7

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