ASTROSAT CZTI

Data Quality Report

Orbit 39625

Creation date: 2024-06-27T22:06:59.188729
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_018T01_9000005488_39625cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39625cztM0_level2_quad_clean.evt
Size (bytes)1,766,543,040385,248,960
Size1.6 GB 367.4 MB
Events in quadrant A12,293,6512,648,929
Events in quadrant B10,759,6562,717,906
Events in quadrant C22,937,1932,430,874
Events in quadrant D17,624,6292,283,602

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0515706
B0486465
C0841825
D0687165

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A230031350.586880%
B230032220.965092%
C23003245610.676868%
D2300317997.820719%

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 32236 23008 93 93 0.29% 0.40%
B 32236 23008 117 117 0.36% 0.51%
C 32236 23008 2319 2319 7.19% 10.08%
D 32236 23008 1572 1572 4.88% 6.83%

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 1615821 3271.94 2491 2446 493.1
A 15 222 686586 1387.44 2491 2446 493.1
A 15 174 147720 294.62 2491 2446 493.1
B 5 172 690587 1478.81 2481 2413 465.4
B 5 255 291604 621.44 2481 2413 465.4
B 12 111 58613 120.77 2481 2413 465.4
C 9 187 9284478 17138.7 2367 2386 541.6
C 15 208 3381337 6238.98 2367 2386 541.6
C 15 214 913804 1682.87 2367 2386 541.6
D 13 249 4550462 8001.29 2357 2296 568.4
D 12 227 1777283 3122.62 2357 2296 568.4
D 2 249 542501 950.35 2357 2296 568.4

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